249263888 has 40 divisors (see below), whose sum is σ = 511872000. Its totient is φ = 117258624.

The previous prime is 249263879. The next prime is 249263893. The reversal of 249263888 is 888362942.

It is a super-3 number, since 3×249263888³ (a number of 26 digits) contains 333 as substring.

It is a nialpdrome in base 16.

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, 42545 + ... + 48047.

It is an arithmetic number, because the mean of its divisors is an integer number (12796800).

Almost surely, 2^249263888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249263888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255936000).

249263888 is an abundant number, since it is smaller than the sum of its proper divisors (262608112).

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

249263888 is a wasteful number, since it uses less digits than its factorization.

249263888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5679 (or 5673 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 50.

The square root of 249263888 is about 15788.0932350933. The cubic root of 249263888 is about 629.3416217707.

The spelling of 249263888 in words is "two hundred forty-nine million, two hundred sixty-three thousand, eight hundred eighty-eight".