988172 has 18 divisors (see below), whose sum is σ = 1811628. Its totient is φ = 471592.

The previous prime is 988157. The next prime is 988199. The reversal of 988172 is 271889.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1883 + ... + 2349.

It is an arithmetic number, because the mean of its divisors is an integer number (100646).

2⁹⁸⁸¹⁷² is an apocalyptic number.

988172 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

988172 is a deficient number, since it is larger than the sum of its proper divisors (823456).

988172 is a wasteful number, since it uses less digits than its factorization.

988172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 492 counting only the distinct ones).

The product of its digits is 8064, while the sum is 35.

The square root of 988172 is about 994.0684081088. The cubic root of 988172 is about 99.6041685755.

The spelling of 988172 in words is "nine hundred eighty-eight thousand, one hundred seventy-two".