398016910928 has 80 divisors (see below), whose sum is σ = 952495869696. Its totient is φ = 156896732160.

The previous prime is 398016910901. The next prime is 398016910957. The reversal of 398016910928 is 829019610893.

It is a super-2 number, since 2×398016910928² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77276 + ... + 895547.

Almost surely, 2^398016910928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398016910928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (476247934848).

398016910928 is an abundant number, since it is smaller than the sum of its proper divisors (554478958768).

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

398016910928 is a wasteful number, since it uses less digits than its factorization.

398016910928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973132 (or 973126 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 56.

The spelling of 398016910928 in words is "three hundred ninety-eight billion, sixteen million, nine hundred ten thousand, nine hundred twenty-eight".