398768274 has 24 divisors (see below), whose sum is σ = 864386640. Its totient is φ = 132862968.

The previous prime is 398768263. The next prime is 398768297. The reversal of 398768274 is 472867893.

It is a super-2 number, since 2×398768274² = 318032272697878152, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 398768274.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56937 + ... + 63555.

It is an arithmetic number, because the mean of its divisors is an integer number (36016110).

Almost surely, 2^398768274 is an apocalyptic number.

398768274 is an abundant number, since it is smaller than the sum of its proper divisors (465618366).

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

398768274 is a wasteful number, since it uses less digits than its factorization.

398768274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9974 (or 9971 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 398768274 is about 19969.1831079792. The cubic root of 398768274 is about 736.0492358859.

The spelling of 398768274 in words is "three hundred ninety-eight million, seven hundred sixty-eight thousand, two hundred seventy-four".