80172160 has 32 divisors (see below), whose sum is σ = 191663100. Its totient is φ = 32068608.

The previous prime is 80172143. The next prime is 80172203. The reversal of 80172160 is 6127108.

It can be written as a sum of positive squares in 2 ways, for example, as 80138304 + 33856 = 8952^2 + 184^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-4 number, since 4×80172160⁴ (a number of 33 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61995 + ... + 63274.

Almost surely, 2^80172160 is an apocalyptic number.

80172160 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80172160 is an abundant number, since it is smaller than the sum of its proper divisors (111490940).

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

80172160 is a wasteful number, since it uses less digits than its factorization.

80172160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125288 (or 125276 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 80172160 is about 8953.8907744064. The cubic root of 80172160 is about 431.1958061144.

Adding to 80172160 its reverse (6127108), we get a palindrome (86299268).

The spelling of 80172160 in words is "eighty million, one hundred seventy-two thousand, one hundred sixty".