816040026 has 24 divisors (see below), whose sum is σ = 1768613184. Its totient is φ = 271932360.

The previous prime is 816040013. The next prime is 816040031. The reversal of 816040026 is 620040618.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109561 + ... + 116771.

It is an arithmetic number, because the mean of its divisors is an integer number (73692216).

Almost surely, 2^816040026 is an apocalyptic number.

816040026 is an abundant number, since it is smaller than the sum of its proper divisors (952573158).

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

816040026 is a wasteful number, since it uses less digits than its factorization.

816040026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13506 (or 13503 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 816040026 is about 28566.4143007133. The cubic root of 816040026 is about 934.4810243943.

The spelling of 816040026 in words is "eight hundred sixteen million, forty thousand, twenty-six".