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13102012400 = 2452191799631
BaseRepresentation
bin11000011001111000…
…01101011111110000
31020211002202012011112
430030330031133300
5203313103344100
610004033332452
7642452160611
oct141474153760
936732665145
1013102012400
115613820924
122657a07128
13130a56b479
148c4121c08
1551a3a2b35
hex30cf0d7f0

13102012400 has 120 divisors (see below), whose sum is σ = 33322867200. Its totient is φ = 4936723200.

The previous prime is 13102012379. The next prime is 13102012403. The reversal of 13102012400 is 421020131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13102012403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1355585 + ... + 1365215.

It is an arithmetic number, because the mean of its divisors is an integer number (277690560).

Almost surely, 213102012400 is an apocalyptic number.

13102012400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13102012400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16661433600).

13102012400 is an abundant number, since it is smaller than the sum of its proper divisors (20220854800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13102012400 is a wasteful number, since it uses less digits than its factorization.

13102012400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9847 (or 9836 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 13102012400 its reverse (421020131), we get a palindrome (13523032531).

The spelling of 13102012400 in words is "thirteen billion, one hundred two million, twelve thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 19 20 25 38 40 50 76 80 95 100 152 179 190 200 304 358 380 400 475 716 760 895 950 1432 1520 1790 1900 2864 3401 3580 3800 4475 6802 7160 7600 8950 9631 13604 14320 17005 17900 19262 27208 34010 35800 38524 48155 54416 68020 71600 77048 85025 96310 136040 154096 170050 182989 192620 240775 272080 340100 365978 385240 481550 680200 731956 770480 914945 963100 1360400 1463912 1723949 1829890 1926200 2927824 3447898 3659780 3852400 4574725 6895796 7319560 8619745 9149450 13791592 14639120 17239490 18298900 27583184 32755031 34478980 36597800 43098725 65510062 68957960 73195600 86197450 131020124 137915920 163775155 172394900 262040248 327550310 344789800 524080496 655100620 689579600 818875775 1310201240 1637751550 2620402480 3275503100 6551006200 13102012400