249452874 has 72 divisors (see below), whose sum is σ = 605571876. Its totient is φ = 74131200.

The previous prime is 249452869. The next prime is 249452893. The reversal of 249452874 is 478254942.

It can be written as a sum of positive squares in 2 ways, for example, as 241584849 + 7868025 = 15543^2 + 2805^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 114354 + ... + 116514.

Almost surely, 2^249452874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249452874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302785938).

249452874 is an abundant number, since it is smaller than the sum of its proper divisors (356119002).

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

249452874 is a wasteful number, since it uses less digits than its factorization.

249452874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244 (or 2230 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 249452874 is about 15794.0771810195. The cubic root of 249452874 is about 629.5006322489.

The spelling of 249452874 in words is "two hundred forty-nine million, four hundred fifty-two thousand, eight hundred seventy-four".