81944796 has 24 divisors (see below), whose sum is σ = 201268480. Its totient is φ = 25877232.

The previous prime is 81944789. The next prime is 81944813. The reversal of 81944796 is 69744918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179476 + ... + 179931.

Almost surely, 2^81944796 is an apocalyptic number.

It is an amenable number.

81944796 is an abundant number, since it is smaller than the sum of its proper divisors (119323684).

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

81944796 is a wasteful number, since it uses less digits than its factorization.

81944796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359433 (or 359431 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 81944796 is about 9052.3364939666. The cubic root of 81944796 is about 434.3506337004.

The spelling of 81944796 in words is "eighty-one million, nine hundred forty-four thousand, seven hundred ninety-six".