322620006520 has 64 divisors (see below), whose sum is σ = 832748843520. Its totient is φ = 110191968384.

The previous prime is 322620006487. The next prime is 322620006547. The reversal of 322620006520 is 25600026223.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2116882 + ... + 2264161.

It is an arithmetic number, because the mean of its divisors is an integer number (13011700680).

Almost surely, 2^322620006520 is an apocalyptic number.

It is an amenable number.

322620006520 is an abundant number, since it is smaller than the sum of its proper divisors (510128837000).

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

322620006520 is a wasteful number, since it uses less digits than its factorization.

322620006520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4381324 (or 4381320 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The spelling of 322620006520 in words is "three hundred twenty-two billion, six hundred twenty million, six thousand, five hundred twenty".