816875340 has 48 divisors (see below), whose sum is σ = 2289530880. Its totient is φ = 217616320.

The previous prime is 816875251. The next prime is 816875357. The reversal of 816875340 is 43578618.

It is a super-2 number, since 2×816875340² = 1334570642200231200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 816875292 and 816875301.

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, 59221 + ... + 71699.

It is an arithmetic number, because the mean of its divisors is an integer number (47698560).

Almost surely, 2^816875340 is an apocalyptic number.

It is an amenable number.

816875340 is an abundant number, since it is smaller than the sum of its proper divisors (1472655540).

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

816875340 is a wasteful number, since it uses less digits than its factorization.

816875340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13582 (or 13580 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 816875340 is about 28581.0311220572. The cubic root of 816875340 is about 934.7997664773.

The spelling of 816875340 in words is "eight hundred sixteen million, eight hundred seventy-five thousand, three hundred forty".