890917830 has 48 divisors (see below), whose sum is σ = 2526969744. Its totient is φ = 215979840.

The previous prime is 890917829. The next prime is 890917843. The reversal of 890917830 is 38719098.

890917830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 448969 + ... + 450948.

It is an arithmetic number, because the mean of its divisors is an integer number (52645203).

Almost surely, 2^890917830 is an apocalyptic number.

890917830 is an abundant number, since it is smaller than the sum of its proper divisors (1636051914).

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

890917830 is a wasteful number, since it uses less digits than its factorization.

890917830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899941 (or 899938 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 890917830 is about 29848.2466821755. The cubic root of 890917830 is about 962.2307174950.

The spelling of 890917830 in words is "eight hundred ninety million, nine hundred seventeen thousand, eight hundred thirty".