816625434 has 32 divisors (see below), whose sum is σ = 1722519360. Its totient is φ = 257385600.

The previous prime is 816625429. The next prime is 816625441. The reversal of 816625434 is 434526618.

816625434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 816625392 and 816625401.

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, 55054 + ... + 68294.

It is an arithmetic number, because the mean of its divisors is an integer number (53828730).

Almost surely, 2^816625434 is an apocalyptic number.

816625434 is an abundant number, since it is smaller than the sum of its proper divisors (905893926).

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

816625434 is a wasteful number, since it uses less digits than its factorization.

816625434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13806.

The product of its digits is 138240, while the sum is 39.

The square root of 816625434 is about 28576.6589019780. The cubic root of 816625434 is about 934.7044292469.

The spelling of 816625434 in words is "eight hundred sixteen million, six hundred twenty-five thousand, four hundred thirty-four".