80813700 has 180 divisors, whose sum is σ = 286096272. Its totient is φ = 19569600.

The previous prime is 80813687. The next prime is 80813713. The reversal of 80813700 is 731808.

It is an interprime number because it is at equal distance from previous prime (80813687) and next prime (80813713).

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 59 ways as a sum of consecutive naturals, for example, 88647 + ... + 89553.

Almost surely, 2^80813700 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 80813700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143048136).

80813700 is an abundant number, since it is smaller than the sum of its proper divisors (205282572).

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

80813700 is a wasteful number, since it uses less digits than its factorization.

80813700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 80813700 is about 8989.6440418962. The cubic root of 80813700 is about 432.3428990489.

It can be divided in two parts, 8081 and 3700, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 80813700 in words is "eighty million, eight hundred thirteen thousand, seven hundred".