890868087928 has 64 divisors (see below), whose sum is σ = 2057170752000. Its totient is φ = 352204820352.

The previous prime is 890868087917. The next prime is 890868087937. The reversal of 890868087928 is 829780868098.

It is a hoax number, since the sum of its digits (73) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 742483 + ... + 1527421.

It is an arithmetic number, because the mean of its divisors is an integer number (32143293000).

Almost surely, 2^890868087928 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 890868087928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1028585376000).

890868087928 is an abundant number, since it is smaller than the sum of its proper divisors (1166302664072).

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

890868087928 is a wasteful number, since it uses less digits than its factorization.

890868087928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786524 (or 786520 counting only the distinct ones).

The product of its (nonzero) digits is 222953472, while the sum is 73.

The spelling of 890868087928 in words is "eight hundred ninety billion, eight hundred sixty-eight million, eighty-seven thousand, nine hundred twenty-eight".