622131408 has 40 divisors (see below), whose sum is σ = 1785748800. Its totient is φ = 207376992.

The previous prime is 622131407. The next prime is 622131451. The reversal of 622131408 is 804131226.

622131408 is a `hidden beast` number, since 6 + 221 + 31 + 408 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622131407) 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, 719628 + ... + 720491.

It is an arithmetic number, because the mean of its divisors is an integer number (44643720).

Almost surely, 2^622131408 is an apocalyptic number.

It is an amenable number.

622131408 is an abundant number, since it is smaller than the sum of its proper divisors (1163617392).

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

622131408 is a wasteful number, since it uses less digits than its factorization.

622131408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440136 (or 1440124 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 622131408 is about 24942.5621779319. The cubic root of 622131408 is about 853.6779074467.

The spelling of 622131408 in words is "six hundred twenty-two million, one hundred thirty-one thousand, four hundred eight".