152331986 has 4 divisors (see below), whose sum is σ = 228497982. Its totient is φ = 76165992.

The previous prime is 152331973. The next prime is 152331989. The reversal of 152331986 is 689133251.

It is a happy number.

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., 139594225 + 12737761 = 11815^2 + 3569^2 .

It is not an unprimeable number, because it can be changed into a prime (152331989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38082995 + ... + 38082998.

Almost surely, 2^152331986 is an apocalyptic number.

152331986 is a deficient number, since it is larger than the sum of its proper divisors (76165996).

152331986 is an equidigital number, since it uses as much as digits as its factorization.

152331986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76165995.

The product of its digits is 38880, while the sum is 38.

The square root of 152331986 is about 12342.2844724954. The cubic root of 152331986 is about 534.0685875608.

The spelling of 152331986 in words is "one hundred fifty-two million, three hundred thirty-one thousand, nine hundred eighty-six".