152072978 has 4 divisors (see below), whose sum is σ = 228109470. Its totient is φ = 76036488.

The previous prime is 152072971. The next prime is 152072989. The reversal of 152072978 is 879270251.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 81126049 + 70946929 = 9007^2 + 8423^2 .

It is not an unprimeable number, because it can be changed into a prime (152072971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38018243 + ... + 38018246.

Almost surely, 2^152072978 is an apocalyptic number.

152072978 is a deficient number, since it is larger than the sum of its proper divisors (76036492).

152072978 is an equidigital number, since it uses as much as digits as its factorization.

152072978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76036491.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 152072978 is about 12331.7872994956. The cubic root of 152072978 is about 533.7657259982.

The spelling of 152072978 in words is "one hundred fifty-two million, seventy-two thousand, nine hundred seventy-eight".