326501604 has 240 divisors, whose sum is σ = 1041606720. Its totient is φ = 88179840.

The previous prime is 326501599. The next prime is 326501627. The reversal of 326501604 is 406105623.

326501604 is a `hidden beast` number, since 3 + 2 + 6 + 50 + 1 + 604 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 79 ways as a sum of consecutive naturals, for example, 11258662 + ... + 11258690.

It is an arithmetic number, because the mean of its divisors is an integer number (4340028).

Almost surely, 2^326501604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 326501604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520803360).

326501604 is an abundant number, since it is smaller than the sum of its proper divisors (715105116).

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

326501604 is a wasteful number, since it uses less digits than its factorization.

326501604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 326501604 is about 18069.3553841857. The cubic root of 326501604 is about 688.5916832923.

The spelling of 326501604 in words is "three hundred twenty-six million, five hundred one thousand, six hundred four".