249246780 has 48 divisors (see below), whose sum is σ = 698955264. Its totient is φ = 66364480.

The previous prime is 249246761. The next prime is 249246797. The reversal of 249246780 is 87642942.

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, 41785 + ... + 47375.

It is an arithmetic number, because the mean of its divisors is an integer number (14561568).

Almost surely, 2^249246780 is an apocalyptic number.

249246780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249246780 is an abundant number, since it is smaller than the sum of its proper divisors (449708484).

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

249246780 is a wasteful number, since it uses less digits than its factorization.

249246780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6346 (or 6344 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 249246780 is about 15787.5514250944. The cubic root of 249246780 is about 629.3272233449.

The spelling of 249246780 in words is "two hundred forty-nine million, two hundred forty-six thousand, seven hundred eighty".