622438731 has 48 divisors (see below), whose sum is σ = 987124320. Its totient is φ = 376396800.

The previous prime is 622438721. The next prime is 622438787. The reversal of 622438731 is 137834226.

It is a happy number.

It is not a de Polignac number, because 622438731 - 2¹⁵ = 622405963 is a prime.

It is a super-2 number, since 2×622438731² = 774859947697780722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (622438721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 477781 + ... + 479081.

It is an arithmetic number, because the mean of its divisors is an integer number (20565090).

Almost surely, 2^622438731 is an apocalyptic number.

622438731 is a deficient number, since it is larger than the sum of its proper divisors (364685589).

622438731 is a wasteful number, since it uses less digits than its factorization.

622438731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436 (or 1433 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 622438731 is about 24948.7220313987. The cubic root of 622438731 is about 853.8184520671.

The spelling of 622438731 in words is "six hundred twenty-two million, four hundred thirty-eight thousand, seven hundred thirty-one".