249518490 has 64 divisors (see below), whose sum is σ = 672973056. Its totient is φ = 58747392.

The previous prime is 249518471. The next prime is 249518509. The reversal of 249518490 is 94815942.

It is an interprime number because it is at equal distance from previous prime (249518471) and next prime (249518509).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4939 + ... + 22878.

It is an arithmetic number, because the mean of its divisors is an integer number (10515204).

Almost surely, 2^249518490 is an apocalyptic number.

249518490 is an abundant number, since it is smaller than the sum of its proper divisors (423454566).

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

249518490 is a wasteful number, since it uses less digits than its factorization.

249518490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27863.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 249518490 is about 15796.1542788110. The cubic root of 249518490 is about 629.5558219549. Note that the first 3 decimals are identical.

The spelling of 249518490 in words is "two hundred forty-nine million, five hundred eighteen thousand, four hundred ninety".