326887990 has 32 divisors (see below), whose sum is σ = 691268256. Its totient is φ = 109724160.

The previous prime is 326887949. The next prime is 326887997. The reversal of 326887990 is 99788623.

326887990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326887997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112867 + ... + 115726.

It is an arithmetic number, because the mean of its divisors is an integer number (21602133).

Almost surely, 2^326887990 is an apocalyptic number.

326887990 is an abundant number, since it is smaller than the sum of its proper divisors (364380266).

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

326887990 is a wasteful number, since it uses less digits than its factorization.

326887990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228624.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 326887990 is about 18080.0439711855. The cubic root of 326887990 is about 688.8632054922.

The spelling of 326887990 in words is "three hundred twenty-six million, eight hundred eighty-seven thousand, nine hundred ninety".