249917152 has 12 divisors (see below), whose sum is σ = 492024456. Its totient is φ = 124958560.

The previous prime is 249917147. The next prime is 249917177. The reversal of 249917152 is 251719942.

It is a happy number.

It is a super-2 number, since 2×249917152² = 124917165727582208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3904924 + ... + 3904987.

It is an arithmetic number, because the mean of its divisors is an integer number (41002038).

Almost surely, 2^249917152 is an apocalyptic number.

It is an amenable number.

249917152 is a deficient number, since it is larger than the sum of its proper divisors (242107304).

249917152 is an equidigital number, since it uses as much as digits as its factorization.

249917152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7809921 (or 7809913 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The square root of 249917152 is about 15808.7681999579. The cubic root of 249917152 is about 629.8909292996.

The spelling of 249917152 in words is "two hundred forty-nine million, nine hundred seventeen thousand, one hundred fifty-two".