326856990 has 16 divisors (see below), whose sum is σ = 784456848. Its totient is φ = 87161856.

The previous prime is 326856983. The next prime is 326857009. The reversal of 326856990 is 99658623.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5447587 + ... + 5447646.

It is an arithmetic number, because the mean of its divisors is an integer number (49028553).

Almost surely, 2^326856990 is an apocalyptic number.

326856990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

326856990 is an abundant number, since it is smaller than the sum of its proper divisors (457599858).

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

326856990 is a wasteful number, since it uses less digits than its factorization.

326856990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10895243.

The product of its (nonzero) digits is 699840, while the sum is 48.

The square root of 326856990 is about 18079.1866520593. The cubic root of 326856990 is about 688.8414289865.

The spelling of 326856990 in words is "three hundred twenty-six million, eight hundred fifty-six thousand, nine hundred ninety".