398254656 has 28 divisors (see below), whose sum is σ = 1053715952. Its totient is φ = 132751488.

The previous prime is 398254567. The next prime is 398254723. The reversal of 398254656 is 656452893.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1036930 + ... + 1037313.

Almost surely, 2^398254656 is an apocalyptic number.

It is an amenable number.

398254656 is an abundant number, since it is smaller than the sum of its proper divisors (655461296).

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

398254656 is a wasteful number, since it uses less digits than its factorization.

398254656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074258 (or 2074248 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 48.

The square root of 398254656 is about 19956.3186985977. The cubic root of 398254656 is about 735.7330868946.

The spelling of 398254656 in words is "three hundred ninety-eight million, two hundred fifty-four thousand, six hundred fifty-six".