249561012 has 48 divisors (see below), whose sum is σ = 592708032. Its totient is φ = 81711360.

The previous prime is 249561007. The next prime is 249561031. The reversal of 249561012 is 210165942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303562 + ... + 304382.

It is an arithmetic number, because the mean of its divisors is an integer number (12348084).

Almost surely, 2^249561012 is an apocalyptic number.

It is an amenable number.

249561012 is an abundant number, since it is smaller than the sum of its proper divisors (343147020).

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

249561012 is a wasteful number, since it uses less digits than its factorization.

249561012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248 (or 1246 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 249561012 is about 15797.5001819908. The cubic root of 249561012 is about 629.5915820999.

The spelling of 249561012 in words is "two hundred forty-nine million, five hundred sixty-one thousand, twelve".