81300888 has 32 divisors (see below), whose sum is σ = 225836400. Its totient is φ = 27100224.

The previous prime is 81300881. The next prime is 81300911. The reversal of 81300888 is 88800318.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81300881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187981 + ... + 188412.

Almost surely, 2^81300888 is an apocalyptic number.

It is an amenable number.

81300888 is an abundant number, since it is smaller than the sum of its proper divisors (144535512).

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

81300888 is a wasteful number, since it uses less digits than its factorization.

81300888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376408 (or 376398 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 81300888 is about 9016.7005051737. The cubic root of 81300888 is about 433.2099567236.

The spelling of 81300888 in words is "eighty-one million, three hundred thousand, eight hundred eighty-eight".