249641376 has 48 divisors (see below), whose sum is σ = 656123328. Its totient is φ = 83110400.

The previous prime is 249641339. The next prime is 249641389. The reversal of 249641376 is 673146942.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×249641376² = 124641633222346752, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144196 + ... + 145916.

It is an arithmetic number, because the mean of its divisors is an integer number (13669236).

Almost surely, 2^249641376 is an apocalyptic number.

It is an amenable number.

249641376 is an abundant number, since it is smaller than the sum of its proper divisors (406481952).

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

249641376 is a wasteful number, since it uses less digits than its factorization.

249641376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3245 (or 3237 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 249641376 is about 15800.0435442438. The cubic root of 249641376 is about 629.6591555127.

The spelling of 249641376 in words is "two hundred forty-nine million, six hundred forty-one thousand, three hundred seventy-six".