323256990 has 64 divisors (see below), whose sum is σ = 892684800. Its totient is φ = 73384320.

The previous prime is 323256971. The next prime is 323257003. The reversal of 323256990 is 99652323.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26125 + ... + 36455.

It is an arithmetic number, because the mean of its divisors is an integer number (13948200).

Almost surely, 2^323256990 is an apocalyptic number.

323256990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 323256990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446342400).

323256990 is an abundant number, since it is smaller than the sum of its proper divisors (569427810).

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

323256990 is a wasteful number, since it uses less digits than its factorization.

323256990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10497.

The product of its (nonzero) digits is 87480, while the sum is 39.

The square root of 323256990 is about 17979.3489871018. The cubic root of 323256990 is about 686.3031226192.

The spelling of 323256990 in words is "three hundred twenty-three million, two hundred fifty-six thousand, nine hundred ninety".