249711132 has 48 divisors (see below), whose sum is σ = 637023744. Its totient is φ = 75504000.

The previous prime is 249711131. The next prime is 249711139. The reversal of 249711132 is 231117942.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 249711132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249711131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66957 + ... + 70587.

It is an arithmetic number, because the mean of its divisors is an integer number (13271328).

Almost surely, 2^249711132 is an apocalyptic number.

249711132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

249711132 is an abundant number, since it is smaller than the sum of its proper divisors (387312612).

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

249711132 is a wasteful number, since it uses less digits than its factorization.

249711132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170 (or 4168 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 249711132 is about 15802.2508523311. The cubic root of 249711132 is about 629.7177975193.

The spelling of 249711132 in words is "two hundred forty-nine million, seven hundred eleven thousand, one hundred thirty-two".