326221940 has 24 divisors (see below), whose sum is σ = 747345312. Its totient is φ = 118626080.

The previous prime is 326221937. The next prime is 326221981. The reversal of 326221940 is 49122623.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 741194 + ... + 741633.

It is an arithmetic number, because the mean of its divisors is an integer number (31139388).

Almost surely, 2^326221940 is an apocalyptic number.

It is an amenable number.

326221940 is an abundant number, since it is smaller than the sum of its proper divisors (421123372).

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

326221940 is a wasteful number, since it uses less digits than its factorization.

326221940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482847 (or 1482845 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 326221940 is about 18061.6150994312. The cubic root of 326221940 is about 688.3950233971.

The spelling of 326221940 in words is "three hundred twenty-six million, two hundred twenty-one thousand, nine hundred forty".