816334402 has 16 divisors (see below), whose sum is σ = 1320234552. Its totient is φ = 376329600.

The previous prime is 816334397. The next prime is 816334429. The reversal of 816334402 is 204433618.

It can be written as a sum of positive squares in 4 ways, for example, as 578835481 + 237498921 = 24059^2 + 15411^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4902 + ... + 40702.

Almost surely, 2^816334402 is an apocalyptic number.

816334402 is a deficient number, since it is larger than the sum of its proper divisors (503900150).

816334402 is a wasteful number, since it uses less digits than its factorization.

816334402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36693.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 816334402 is about 28571.5663203822. The cubic root of 816334402 is about 934.5933782436.

The spelling of 816334402 in words is "eight hundred sixteen million, three hundred thirty-four thousand, four hundred two".