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15106140 = 22325719631
BaseRepresentation
bin111001101000…
…000001011100
31001102110201200
4321220001130
512331344030
61255435500
7242254140
oct71500134
931373650
1015106140
118588515
125085b90
13318ba5a
142013220
1514d5d60
hexe6805c

15106140 has 144 divisors (see below), whose sum is σ = 55211520. Its totient is φ = 3265920.

The previous prime is 15106139. The next prime is 15106151. The reversal of 15106140 is 4160151.

15106140 is a `hidden beast` number, since 1 + 51 + 0 + 614 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23625 + ... + 24255.

Almost surely, 215106140 is an apocalyptic number.

15106140 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 15106140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27605760).

15106140 is an abundant number, since it is smaller than the sum of its proper divisors (40105380).

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

15106140 is a wasteful number, since it uses less digits than its factorization.

15106140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 15106140 is about 3886.6618067437. The cubic root of 15106140 is about 247.2015379928.

Adding to 15106140 its reverse (4160151), we get a palindrome (19266291).

The spelling of 15106140 in words is "fifteen million, one hundred six thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 7 9 10 12 14 15 18 19 20 21 28 30 35 36 38 42 45 57 60 63 70 76 84 90 95 105 114 126 133 140 171 180 190 210 228 252 266 285 315 342 380 399 420 532 570 630 631 665 684 798 855 1140 1197 1260 1262 1330 1596 1710 1893 1995 2394 2524 2660 3155 3420 3786 3990 4417 4788 5679 5985 6310 7572 7980 8834 9465 11358 11970 11989 12620 13251 17668 18930 22085 22716 23940 23978 26502 28395 35967 37860 39753 44170 47956 53004 56790 59945 66255 71934 79506 83923 88340 107901 113580 119890 132510 143868 159012 167846 179835 198765 215802 239780 251769 265020 335692 359670 397530 419615 431604 503538 539505 719340 755307 795060 839230 1007076 1079010 1258845 1510614 1678460 2158020 2517690 3021228 3776535 5035380 7553070 15106140