305153972 has 24 divisors (see below), whose sum is σ = 570204096. Its totient is φ = 142547328.

The previous prime is 305153971. The next prime is 305154007. The reversal of 305153972 is 279351503.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305153971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34613 + ... + 42524.

It is an arithmetic number, because the mean of its divisors is an integer number (23758504).

Almost surely, 2^305153972 is an apocalyptic number.

It is an amenable number.

305153972 is a deficient number, since it is larger than the sum of its proper divisors (265050124).

305153972 is a wasteful number, since it uses less digits than its factorization.

305153972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77207 (or 77205 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 35.

The square root of 305153972 is about 17468.6568459055. The cubic root of 305153972 is about 673.2448021585.

The spelling of 305153972 in words is "three hundred five million, one hundred fifty-three thousand, nine hundred seventy-two".