816522126 has 32 divisors (see below), whose sum is σ = 1947483648. Its totient is φ = 223148640.

The previous prime is 816522107. The next prime is 816522127. The reversal of 816522126 is 621225618.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816522127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421665 + ... + 423596.

It is an arithmetic number, because the mean of its divisors is an integer number (60858864).

Almost surely, 2^816522126 is an apocalyptic number.

816522126 is an abundant number, since it is smaller than the sum of its proper divisors (1130961522).

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

816522126 is a wasteful number, since it uses less digits than its factorization.

816522126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845296.

The product of its digits is 11520, while the sum is 33.

The square root of 816522126 is about 28574.8512857023. The cubic root of 816522126 is about 934.6650123518.

The spelling of 816522126 in words is "eight hundred sixteen million, five hundred twenty-two thousand, one hundred twenty-six".