80813000 has 64 divisors (see below), whose sum is σ = 190494720. Its totient is φ = 32088000.

The previous prime is 80812999. The next prime is 80813003. The reversal of 80813000 is 31808.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (80813003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210809 + ... + 211191.

It is an arithmetic number, because the mean of its divisors is an integer number (2976480).

Almost surely, 2^80813000 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 80813000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95247360).

80813000 is an abundant number, since it is smaller than the sum of its proper divisors (109681720).

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

80813000 is a wasteful number, since it uses less digits than its factorization.

80813000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615 (or 601 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 80813000 is about 8989.6051081235. The cubic root of 80813000 is about 432.3416507420.

Adding to 80813000 its reverse (31808), we get a palindrome (80844808).

The spelling of 80813000 in words is "eighty million, eight hundred thirteen thousand".