239682690 has 48 divisors (see below), whose sum is σ = 671114808. Its totient is φ = 58998528.

The previous prime is 239682671. The next prime is 239682691. The reversal of 239682690 is 96286932.

It can be written as a sum of positive squares in 4 ways, for example, as 91987281 + 147695409 = 9591^2 + 12153^2 .

It is a super-2 number, since 2×239682690² = 114895583771272200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (239682691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101259 + ... + 103598.

Almost surely, 2^239682690 is an apocalyptic number.

239682690 is an abundant number, since it is smaller than the sum of its proper divisors (431432118).

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

239682690 is a wasteful number, since it uses less digits than its factorization.

239682690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204883 (or 204880 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 239682690 is about 15481.6888613613. The cubic root of 239682690 is about 621.1725037505.

The spelling of 239682690 in words is "two hundred thirty-nine million, six hundred eighty-two thousand, six hundred ninety".