322689640 has 64 divisors (see below), whose sum is σ = 893612160. Its totient is φ = 102124800.

The previous prime is 322689629. The next prime is 322689649. The reversal of 322689640 is 46986223.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 322689593 and 322689602.

It is not an unprimeable number, because it can be changed into a prime (322689649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40686 + ... + 47965.

It is an arithmetic number, because the mean of its divisors is an integer number (13962690).

Almost surely, 2^322689640 is an apocalyptic number.

It is an amenable number.

322689640 is an abundant number, since it is smaller than the sum of its proper divisors (570922520).

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

322689640 is a wasteful number, since it uses less digits than its factorization.

322689640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88682 (or 88678 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 322689640 is about 17963.5642343050. The cubic root of 322689640 is about 685.9013761156.

The spelling of 322689640 in words is "three hundred twenty-two million, six hundred eighty-nine thousand, six hundred forty".