81088300 has 36 divisors (see below), whose sum is σ = 186316200. Its totient is φ = 30526720.

The previous prime is 81088289. The next prime is 81088303. The reversal of 81088300 is 388018.

It is not an unprimeable number, because it can be changed into a prime (81088303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22150 + ... + 25549.

It is an arithmetic number, because the mean of its divisors is an integer number (5175450).

Almost surely, 2^81088300 is an apocalyptic number.

It is an amenable number.

81088300 is an abundant number, since it is smaller than the sum of its proper divisors (105227900).

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

81088300 is a wasteful number, since it uses less digits than its factorization.

81088300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47730 (or 47723 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 81088300 is about 9004.9042193685. The cubic root of 81088300 is about 432.8320370047.

The spelling of 81088300 in words is "eighty-one million, eighty-eight thousand, three hundred".