816222474 has 32 divisors (see below), whose sum is σ = 1856015040. Its totient is φ = 265746096.

The previous prime is 816222439. The next prime is 816222481. The reversal of 816222474 is 474222618.

816222474 is a `hidden beast` number, since 8 + 1 + 622 + 24 + 7 + 4 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173437 + ... + 178080.

It is an arithmetic number, because the mean of its divisors is an integer number (58000470).

Almost surely, 2^816222474 is an apocalyptic number.

816222474 is an abundant number, since it is smaller than the sum of its proper divisors (1039792566).

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

816222474 is a wasteful number, since it uses less digits than its factorization.

816222474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351571 (or 351565 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 816222474 is about 28569.6075226805. The cubic root of 816222474 is about 934.5506621097.

The spelling of 816222474 in words is "eight hundred sixteen million, two hundred twenty-two thousand, four hundred seventy-four".