249475632 has 80 divisors (see below), whose sum is σ = 761975040. Its totient is φ = 68818176.

The previous prime is 249475619. The next prime is 249475649. The reversal of 249475632 is 236574942.

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 15 ways as a sum of consecutive naturals, for example, 3058 + ... + 22545.

It is an arithmetic number, because the mean of its divisors is an integer number (9524688).

Almost surely, 2^249475632 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 249475632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380987520).

249475632 is an abundant number, since it is smaller than the sum of its proper divisors (512499408).

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

249475632 is a wasteful number, since it uses less digits than its factorization.

249475632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25650 (or 25644 counting only the distinct ones).

The product of its digits is 362880, while the sum is 42.

The square root of 249475632 is about 15794.7976245345. The cubic root of 249475632 is about 629.5197751295.

The spelling of 249475632 in words is "two hundred forty-nine million, four hundred seventy-five thousand, six hundred thirty-two".