438684268 has 24 divisors (see below), whose sum is σ = 838106640. Its totient is φ = 199254720.

The previous prime is 438684251. The next prime is 438684283. The reversal of 438684268 is 862486834.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75930 + ... + 81502.

It is an arithmetic number, because the mean of its divisors is an integer number (34921110).

Almost surely, 2^438684268 is an apocalyptic number.

It is an amenable number.

438684268 is a deficient number, since it is larger than the sum of its proper divisors (399422372).

438684268 is a wasteful number, since it uses less digits than its factorization.

438684268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7377 (or 7375 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 49.

The square root of 438684268 is about 20944.7909514514. The cubic root of 438684268 is about 759.8316039649.

The spelling of 438684268 in words is "four hundred thirty-eight million, six hundred eighty-four thousand, two hundred sixty-eight".