249172 has 24 divisors (see below), whose sum is σ = 544320. Its totient is φ = 96960.

The previous prime is 249143. The next prime is 249181. The reversal of 249172 is 271942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97 + ... + 712.

It is an arithmetic number, because the mean of its divisors is an integer number (22680).

2²⁴⁹¹⁷² is an apocalyptic number.

249172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

249172 is an abundant number, since it is smaller than the sum of its proper divisors (295148).

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

249172 is a wasteful number, since it uses less digits than its factorization.

249172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831 (or 829 counting only the distinct ones).

The product of its digits is 1008, while the sum is 25.

The square root of 249172 is about 499.1713132783. The cubic root of 249172 is about 62.9264279306.

The spelling of 249172 in words is "two hundred forty-nine thousand, one hundred seventy-two".