325881920 has 336 divisors, whose sum is σ = 1040514048. Its totient is φ = 94556160.

The previous prime is 325881893. The next prime is 325881929. The reversal of 325881920 is 29188523.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (325881929) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10512305 + ... + 10512335.

It is an arithmetic number, because the mean of its divisors is an integer number (3096768).

Almost surely, 2^325881920 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 325881920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520257024).

325881920 is an abundant number, since it is smaller than the sum of its proper divisors (714632128).

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

325881920 is a wasteful number, since it uses less digits than its factorization.

325881920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 325881920 is about 18052.1998659443. The cubic root of 325881920 is about 688.1557696692.

The spelling of 325881920 in words is "three hundred twenty-five million, eight hundred eighty-one thousand, nine hundred twenty".