322625640 has 32 divisors (see below), whose sum is σ = 967877280. Its totient is φ = 86033472.

The previous prime is 322625581. The next prime is 322625647. The reversal of 322625640 is 46526223.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 322625598 and 322625607.

It is not an unprimeable number, because it can be changed into a prime (322625647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1344154 + ... + 1344393.

It is an arithmetic number, because the mean of its divisors is an integer number (30246165).

Almost surely, 2^322625640 is an apocalyptic number.

322625640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

322625640 is an abundant number, since it is smaller than the sum of its proper divisors (645251640).

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

322625640 is a wasteful number, since it uses less digits than its factorization.

322625640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688561 (or 2688557 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 322625640 is about 17961.7827622984. The cubic root of 322625640 is about 685.8560274946.

The spelling of 322625640 in words is "three hundred twenty-two million, six hundred twenty-five thousand, six hundred forty".