249147480 has 32 divisors (see below), whose sum is σ = 747442800. Its totient is φ = 66439296.

The previous prime is 249147463. The next prime is 249147511. The reversal of 249147480 is 84741942.

249147480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037995 + ... + 1038234.

Almost surely, 2^249147480 is an apocalyptic number.

249147480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249147480 is an abundant number, since it is smaller than the sum of its proper divisors (498295320).

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

249147480 is a wasteful number, since it uses less digits than its factorization.

249147480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2076243 (or 2076239 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 249147480 is about 15784.4062289337. The cubic root of 249147480 is about 629.2436375187.

The spelling of 249147480 in words is "two hundred forty-nine million, one hundred forty-seven thousand, four hundred eighty".