1230157872 has 60 divisors (see below), whose sum is σ = 3553802304. Its totient is φ = 396823680.

The previous prime is 1230157871. The next prime is 1230157879. The reversal of 1230157872 is 2787510321.

1230157872 is a `hidden beast` number, since 12 + 3 + 0 + 1 + 578 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1230157871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133323 + ... + 142250.

Almost surely, 2^1230157872 is an apocalyptic number.

1230157872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1230157872 is an abundant number, since it is smaller than the sum of its proper divisors (2323644432).

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

1230157872 is a wasteful number, since it uses less digits than its factorization.

1230157872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275618 (or 275609 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 1230157872 is about 35073.6064869297. The cubic root of 1230157872 is about 1071.4871079942.

The spelling of 1230157872 in words is "one billion, two hundred thirty million, one hundred fifty-seven thousand, eight hundred seventy-two".