326727690 has 16 divisors (see below), whose sum is σ = 784146528. Its totient is φ = 87127376.

The previous prime is 326727671. The next prime is 326727707. The reversal of 326727690 is 96727623.

It is a super-2 number, since 2×326727690² = 213501966825472200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5445432 + ... + 5445491.

It is an arithmetic number, because the mean of its divisors is an integer number (49009158).

Almost surely, 2^326727690 is an apocalyptic number.

326727690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

326727690 is an abundant number, since it is smaller than the sum of its proper divisors (457418838).

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

326727690 is a wasteful number, since it uses less digits than its factorization.

326727690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10890933.

The product of its (nonzero) digits is 190512, while the sum is 42.

The square root of 326727690 is about 18075.6103631385. The cubic root of 326727690 is about 688.7505850327.

The spelling of 326727690 in words is "three hundred twenty-six million, seven hundred twenty-seven thousand, six hundred ninety".