Search a number
-
+
30254430 = 23523163269
BaseRepresentation
bin111001101101…
…0010101011110
32002221002021110
41303122111132
530221120210
63000242450
7515105223
oct163322536
962832243
1030254430
1116094668
12a170426
136363a3b
14403794a
1529c9420
hex1cda55e

30254430 has 64 divisors (see below), whose sum is σ = 76515840. Its totient is φ = 7641216.

The previous prime is 30254429. The next prime is 30254431. The reversal of 30254430 is 3445203.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30254429) and next prime (30254431).

It is a junction number, because it is equal to n+sod(n) for n = 30254397 and 30254406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30254431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112336 + ... + 112604.

It is an arithmetic number, because the mean of its divisors is an integer number (1195560).

Almost surely, 230254430 is an apocalyptic number.

30254430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30254430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38257920).

30254430 is an abundant number, since it is smaller than the sum of its proper divisors (46261410).

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

30254430 is a wasteful number, since it uses less digits than its factorization.

30254430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 30254430 is about 5500.4027125293. The cubic root of 30254430 is about 311.5991935813.

Adding to 30254430 its reverse (3445203), we get a palindrome (33699633).

The spelling of 30254430 in words is "thirty million, two hundred fifty-four thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 23 30 46 69 115 138 163 230 269 326 345 489 538 690 807 815 978 1345 1614 1630 2445 2690 3749 4035 4890 6187 7498 8070 11247 12374 18561 18745 22494 30935 37122 37490 43847 56235 61870 87694 92805 112470 131541 185610 219235 263082 438470 657705 1008481 1315410 2016962 3025443 5042405 6050886 10084810 15127215 30254430