81794012 has 12 divisors (see below), whose sum is σ = 150673320. Its totient is φ = 38744496.

The previous prime is 81793981. The next prime is 81794071. The reversal of 81794012 is 21049718.

It is a super-2 number, since 2×81794012² = 13380520798112288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 81794012.

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, 538043 + ... + 538194.

It is an arithmetic number, because the mean of its divisors is an integer number (12556110).

Almost surely, 2^81794012 is an apocalyptic number.

It is an amenable number.

81794012 is a deficient number, since it is larger than the sum of its proper divisors (68879308).

81794012 is a wasteful number, since it uses less digits than its factorization.

81794012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076260 (or 1076258 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 81794012 is about 9044.0042016797. The cubic root of 81794012 is about 434.0840585552.

The spelling of 81794012 in words is "eighty-one million, seven hundred ninety-four thousand, twelve".