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230012520 = 233513211451
BaseRepresentation
bin11011011010110…
…11011001101000
3121000210211212020
431231123121220
5432340400040
634453544440
75462034303
oct1555333150
9530724766
10230012520
111089218a1
1265045120
1338864baa
1422795b3a
15152d6cd0
hexdb5b668

230012520 has 64 divisors (see below), whose sum is σ = 691035840. Its totient is φ = 61248000.

The previous prime is 230012513. The next prime is 230012539. The reversal of 230012520 is 25210032.

230012520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 230012520.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157795 + ... + 159245.

It is an arithmetic number, because the mean of its divisors is an integer number (10797435).

Almost surely, 2230012520 is an apocalyptic number.

230012520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230012520 is an abundant number, since it is smaller than the sum of its proper divisors (461023320).

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

230012520 is a wasteful number, since it uses less digits than its factorization.

230012520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786 (or 2782 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 230012520 is about 15166.1636546623. The cubic root of 230012520 is about 612.7036845834.

Adding to 230012520 its reverse (25210032), we get a palindrome (255222552).

The spelling of 230012520 in words is "two hundred thirty million, twelve thousand, five hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 1321 1451 2642 2902 3963 4353 5284 5804 6605 7255 7926 8706 10568 11608 13210 14510 15852 17412 19815 21765 26420 29020 31704 34824 39630 43530 52840 58040 79260 87060 158520 174120 1916771 3833542 5750313 7667084 9583855 11500626 15334168 19167710 23001252 28751565 38335420 46002504 57503130 76670840 115006260 230012520