152721764 has 12 divisors (see below), whose sum is σ = 287821884. Its totient is φ = 70486944.

The previous prime is 152721749. The next prime is 152721787. The reversal of 152721764 is 467127251.

It can be written as a sum of positive squares in 2 ways, for example, as 22944100 + 129777664 = 4790^2 + 11392^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1468427 + ... + 1468530.

It is an arithmetic number, because the mean of its divisors is an integer number (23985157).

Almost surely, 2^152721764 is an apocalyptic number.

It is an amenable number.

152721764 is a deficient number, since it is larger than the sum of its proper divisors (135100120).

152721764 is a wasteful number, since it uses less digits than its factorization.

152721764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936974 (or 2936972 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 152721764 is about 12358.0647352245. The cubic root of 152721764 is about 534.5237138804.

The spelling of 152721764 in words is "one hundred fifty-two million, seven hundred twenty-one thousand, seven hundred sixty-four".