326995920 has 160 divisors (see below), whose sum is σ = 1150640640. Its totient is φ = 85317120.

The previous prime is 326995919. The next prime is 326995937. The reversal of 326995920 is 29599623.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 31 ways as a sum of consecutive naturals, for example, 99910 + ... + 103130.

It is an arithmetic number, because the mean of its divisors is an integer number (7191504).

Almost surely, 2^326995920 is an apocalyptic number.

326995920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 326995920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (575320320).

326995920 is an abundant number, since it is smaller than the sum of its proper divisors (823644720).

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

326995920 is a wasteful number, since it uses less digits than its factorization.

326995920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3290 (or 3278 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The square root of 326995920 is about 18083.0285074155. The cubic root of 326995920 is about 688.9390121159.

The spelling of 326995920 in words is "three hundred twenty-six million, nine hundred ninety-five thousand, nine hundred twenty".