80993700 has 108 divisors (see below), whose sum is σ = 262149888. Its totient is φ = 20894400.

The previous prime is 80993683. The next prime is 80993761. The reversal of 80993700 is 739908.

80993700 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

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

80993700 is strictly pandigital in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26449 + ... + 29351.

It is a vampire number, since it can be written as 8709 ⋅ 9300 (with its own digits).

Almost surely, 2^80993700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80993700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131074944).

80993700 is an abundant number, since it is smaller than the sum of its proper divisors (181156188).

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

80993700 is a wasteful number, since it uses less digits than its factorization.

80993700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2954 (or 2944 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 80993700 is about 8999.6499931942. The cubic root of 80993700 is about 432.6636533047.

The spelling of 80993700 in words is "eighty million, nine hundred ninety-three thousand, seven hundred".