622915438 has 16 divisors (see below), whose sum is σ = 944084160. Its totient is φ = 308229376.

The previous prime is 622915429. The next prime is 622915439. The reversal of 622915438 is 834519226.

It is a self number, because there is not a number n which added to its sum of digits gives 622915438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622915439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181131 + ... + 184537.

It is an arithmetic number, because the mean of its divisors is an integer number (59005260).

Almost surely, 2^622915438 is an apocalyptic number.

622915438 is a deficient number, since it is larger than the sum of its proper divisors (321168722).

622915438 is a wasteful number, since it uses less digits than its factorization.

622915438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4331.

The product of its digits is 103680, while the sum is 40.

The square root of 622915438 is about 24958.2739387162. The cubic root of 622915438 is about 854.0363676886.

The spelling of 622915438 in words is "six hundred twenty-two million, nine hundred fifteen thousand, four hundred thirty-eight".