813890232 has 192 divisors, whose sum is σ = 2493504000. Its totient is φ = 238298112.

The previous prime is 813890227. The next prime is 813890263. The reversal of 813890232 is 232098318.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1837003 + ... + 1837445.

It is an arithmetic number, because the mean of its divisors is an integer number (12987000).

Almost surely, 2^813890232 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 813890232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1246752000).

813890232 is an abundant number, since it is smaller than the sum of its proper divisors (1679613768).

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

813890232 is a wasteful number, since it uses less digits than its factorization.

813890232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 813890232 is about 28528.7614873131. The cubic root of 813890232 is about 933.6596968632.

The spelling of 813890232 in words is "eight hundred thirteen million, eight hundred ninety thousand, two hundred thirty-two".