816235078 has 8 divisors (see below), whose sum is σ = 1224476280. Its totient is φ = 408076320.

The previous prime is 816235037. The next prime is 816235129. The reversal of 816235078 is 870532618.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 816235078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20713 + ... + 45403.

It is an arithmetic number, because the mean of its divisors is an integer number (153059535).

Almost surely, 2^816235078 is an apocalyptic number.

816235078 is a deficient number, since it is larger than the sum of its proper divisors (408241202).

816235078 is a wasteful number, since it uses less digits than its factorization.

816235078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41222.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 816235078 is about 28569.8281058882. The cubic root of 816235078 is about 934.5554724877. Note that the first 3 decimals are identical.

The spelling of 816235078 in words is "eight hundred sixteen million, two hundred thirty-five thousand, seventy-eight".