813894752 has 24 divisors (see below), whose sum is σ = 1748024712. Its totient is φ = 369952000.

The previous prime is 813894749. The next prime is 813894821. The reversal of 813894752 is 257498318.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 813894697 and 813894706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1155749 + ... + 1156452.

It is an arithmetic number, because the mean of its divisors is an integer number (72834363).

Almost surely, 2^813894752 is an apocalyptic number.

It is an amenable number.

813894752 is an abundant number, since it is smaller than the sum of its proper divisors (934129960).

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

813894752 is a wasteful number, since it uses less digits than its factorization.

813894752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2312222 (or 2312214 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 813894752 is about 28528.8407055036. The cubic root of 813894752 is about 933.6614252429.

The spelling of 813894752 in words is "eight hundred thirteen million, eight hundred ninety-four thousand, seven hundred fifty-two".