438628662 has 32 divisors (see below), whose sum is σ = 1032069600. Its totient is φ = 137608704.

The previous prime is 438628657. The next prime is 438628667. The reversal of 438628662 is 266826834.

It is an interprime number because it is at equal distance from previous prime (438628657) and next prime (438628667).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438628667) 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, 237987 + ... + 239822.

It is an arithmetic number, because the mean of its divisors is an integer number (32252175).

Almost surely, 2^438628662 is an apocalyptic number.

438628662 is an abundant number, since it is smaller than the sum of its proper divisors (593440938).

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

438628662 is a wasteful number, since it uses less digits than its factorization.

438628662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477837 (or 477831 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 438628662 is about 20943.4634671537. The cubic root of 438628662 is about 759.7994981243.

The spelling of 438628662 in words is "four hundred thirty-eight million, six hundred twenty-eight thousand, six hundred sixty-two".