80570000 has 100 divisors (see below), whose sum is σ = 223128576. Its totient is φ = 27600000.

The previous prime is 80569991. The next prime is 80570041. The reversal of 80570000 is 7508.

It is a tau number, because it is divible by the number of its divisors (100).

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 69425 + ... + 70575.

Almost surely, 2^80570000 is an apocalyptic number.

80570000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80570000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111564288).

80570000 is an abundant number, since it is smaller than the sum of its proper divisors (142558576).

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

80570000 is a wasteful number, since it uses less digits than its factorization.

80570000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1165 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 80570000 is about 8976.0793222877. The cubic root of 80570000 is about 431.9078735877.

Adding to 80570000 its reverse (7508), we get a palindrome (80577508).

The spelling of 80570000 in words is "eighty million, five hundred seventy thousand".