80172288 has 144 divisors (see below), whose sum is σ = 271116160. Its totient is φ = 22892544.

The previous prime is 80172223. The next prime is 80172299. The reversal of 80172288 is 88227108.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47556 + ... + 49212.

Almost surely, 2^80172288 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 80172288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135558080).

80172288 is an abundant number, since it is smaller than the sum of its proper divisors (190943872).

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

80172288 is a wasteful number, since it uses less digits than its factorization.

80172288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689 (or 1669 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 80172288 is about 8953.8979221342. The cubic root of 80172288 is about 431.1960355915.

The spelling of 80172288 in words is "eighty million, one hundred seventy-two thousand, two hundred eighty-eight".