456789816 has 48 divisors (see below), whose sum is σ = 1413874800. Its totient is φ = 130511232.

The previous prime is 456789799. The next prime is 456789829. The reversal of 456789816 is 618987654.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 452661 + ... + 453668.

It is an arithmetic number, because the mean of its divisors is an integer number (29455725).

Almost surely, 2^456789816 is an apocalyptic number.

It is an amenable number.

456789816 is an abundant number, since it is smaller than the sum of its proper divisors (957084984).

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

456789816 is a wasteful number, since it uses less digits than its factorization.

456789816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906348 (or 906341 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 456789816 is about 21372.6417646486. The cubic root of 456789816 is about 770.1443570355.

The spelling of 456789816 in words is "four hundred fifty-six million, seven hundred eighty-nine thousand, eight hundred sixteen".