81024704 has 28 divisors (see below), whose sum is σ = 163823904. Its totient is φ = 39746304.

The previous prime is 81024701. The next prime is 81024739. The reversal of 81024704 is 40742018.

It is not an unprimeable number, because it can be changed into a prime (81024701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8552 + ... + 15335.

Almost surely, 2^81024704 is an apocalyptic number.

It is an amenable number.

81024704 is an abundant number, since it is smaller than the sum of its proper divisors (82799200).

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

81024704 is a wasteful number, since it uses less digits than its factorization.

81024704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23952 (or 23942 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 81024704 is about 9001.3723398157. The cubic root of 81024704 is about 432.7188534525.

The spelling of 81024704 in words is "eighty-one million, twenty-four thousand, seven hundred four".