321625332 has 72 divisors (see below), whose sum is σ = 940395456. Its totient is φ = 90779904.

The previous prime is 321625327. The next prime is 321625351. The reversal of 321625332 is 233526123.

321625332 is a `hidden beast` number, since 3 + 2 + 1 + 625 + 3 + 32 = 666.

It is a super-2 number, since 2×321625332² = 206885708368220448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321625296 and 321625305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13228 + ... + 28604.

It is an arithmetic number, because the mean of its divisors is an integer number (13061048).

Almost surely, 2^321625332 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 321625332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (470197728).

321625332 is an abundant number, since it is smaller than the sum of its proper divisors (618770124).

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

321625332 is a wasteful number, since it uses less digits than its factorization.

321625332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15477 (or 15472 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 321625332 is about 17933.9156906683. The cubic root of 321625332 is about 685.1464563328.

The spelling of 321625332 in words is "three hundred twenty-one million, six hundred twenty-five thousand, three hundred thirty-two".