398156676 has 24 divisors (see below), whose sum is σ = 938612640. Its totient is φ = 131350272.

The previous prime is 398156659. The next prime is 398156687. The reversal of 398156676 is 676651893.

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, 169866 + ... + 172193.

It is an arithmetic number, because the mean of its divisors is an integer number (39108860).

Almost surely, 2^398156676 is an apocalyptic number.

It is an amenable number.

398156676 is an abundant number, since it is smaller than the sum of its proper divisors (540455964).

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

398156676 is a wasteful number, since it uses less digits than its factorization.

398156676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342163 (or 342161 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The square root of 398156676 is about 19953.8636860133. The cubic root of 398156676 is about 735.6727460722.

The spelling of 398156676 in words is "three hundred ninety-eight million, one hundred fifty-six thousand, six hundred seventy-six".