81014788 has 24 divisors (see below), whose sum is σ = 145706400. Its totient is φ = 39399168.

The previous prime is 81014767. The next prime is 81014797. The reversal of 81014788 is 88741018.

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, 21123 + ... + 24661.

It is an arithmetic number, because the mean of its divisors is an integer number (6071100).

Almost surely, 2^81014788 is an apocalyptic number.

It is an amenable number.

81014788 is a deficient number, since it is larger than the sum of its proper divisors (64691612).

81014788 is a wasteful number, since it uses less digits than its factorization.

81014788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699 (or 3697 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 37.

The square root of 81014788 is about 9000.8215180616. The cubic root of 81014788 is about 432.7012003377.

The spelling of 81014788 in words is "eighty-one million, fourteen thousand, seven hundred eighty-eight".