249649512 has 96 divisors (see below), whose sum is σ = 764301600. Its totient is φ = 67568256.

The previous prime is 249649507. The next prime is 249649537. The reversal of 249649512 is 215946942.

249649512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16758 + ... + 27930.

It is an arithmetic number, because the mean of its divisors is an integer number (7961475).

Almost surely, 2^249649512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249649512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (382150800).

249649512 is an abundant number, since it is smaller than the sum of its proper divisors (514652088).

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

249649512 is a wasteful number, since it uses less digits than its factorization.

249649512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11215 (or 11204 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 249649512 is about 15800.3010097909. The cubic root of 249649512 is about 629.6659957933.

The spelling of 249649512 in words is "two hundred forty-nine million, six hundred forty-nine thousand, five hundred twelve".