328776690 has 32 divisors (see below), whose sum is σ = 860798016. Its totient is φ = 79703360.

The previous prime is 328776689. The next prime is 328776727. The reversal of 328776690 is 96677823.

It is a super-2 number, since 2×328776690² = 216188223774712200, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 497817 + ... + 498476.

It is an arithmetic number, because the mean of its divisors is an integer number (26899938).

Almost surely, 2^328776690 is an apocalyptic number.

328776690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

328776690 is an abundant number, since it is smaller than the sum of its proper divisors (532021326).

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

328776690 is a wasteful number, since it uses less digits than its factorization.

328776690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996314.

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 328776690 is about 18132.2003628903. The cubic root of 328776690 is about 690.1873677257.

The spelling of 328776690 in words is "three hundred twenty-eight million, seven hundred seventy-six thousand, six hundred ninety".