326872920 has 128 divisors (see below), whose sum is σ = 1106784000. Its totient is φ = 76500480.

The previous prime is 326872919. The next prime is 326872927. The reversal of 326872920 is 29278623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326872927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34011 + ... + 42549.

It is an arithmetic number, because the mean of its divisors is an integer number (8646750).

Almost surely, 2^326872920 is an apocalyptic number.

326872920 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 326872920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (553392000).

326872920 is an abundant number, since it is smaller than the sum of its proper divisors (779911080).

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

326872920 is a wasteful number, since it uses less digits than its factorization.

326872920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8593 (or 8589 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 326872920 is about 18079.6272085461. The cubic root of 326872920 is about 688.8526194725.

The spelling of 326872920 in words is "three hundred twenty-six million, eight hundred seventy-two thousand, nine hundred twenty".