249290556 has 12 divisors (see below), whose sum is σ = 581677992. Its totient is φ = 83096848.

The previous prime is 249290551. The next prime is 249290557. The reversal of 249290556 is 655092942.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249290551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10387095 + ... + 10387118.

It is an arithmetic number, because the mean of its divisors is an integer number (48473166).

Almost surely, 2^249290556 is an apocalyptic number.

It is an amenable number.

249290556 is an abundant number, since it is smaller than the sum of its proper divisors (332387436).

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

249290556 is a wasteful number, since it uses less digits than its factorization.

249290556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20774220 (or 20774218 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 249290556 is about 15788.9377730106. The cubic root of 249290556 is about 629.3640647648.

The spelling of 249290556 in words is "two hundred forty-nine million, two hundred ninety thousand, five hundred fifty-six".