81023304 has 32 divisors (see below), whose sum is σ = 203857920. Its totient is φ = 26834496.

The previous prime is 81023291. The next prime is 81023317. The reversal of 81023304 is 40332018.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (81023291) and next prime (81023317).

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, 6984 + ... + 14519.

It is an arithmetic number, because the mean of its divisors is an integer number (6370560).

Almost surely, 2^81023304 is an apocalyptic number.

It is an amenable number.

81023304 is an abundant number, since it is smaller than the sum of its proper divisors (122834616).

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

81023304 is a wasteful number, since it uses less digits than its factorization.

81023304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21669 (or 21665 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 81023304 is about 9001.2945735600. The cubic root of 81023304 is about 432.7163611678.

The spelling of 81023304 in words is "eighty-one million, twenty-three thousand, three hundred four".