249013728 has 36 divisors (see below), whose sum is σ = 708133608. Its totient is φ = 83004480.

The previous prime is 249013703. The next prime is 249013729. The reversal of 249013728 is 827310942.

249013728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 249013692 and 249013701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249013729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 432028 + ... + 432603.

It is an arithmetic number, because the mean of its divisors is an integer number (19670378).

Almost surely, 2^249013728 is an apocalyptic number.

It is an amenable number.

249013728 is an abundant number, since it is smaller than the sum of its proper divisors (459119880).

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

249013728 is a wasteful number, since it uses less digits than its factorization.

249013728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864647 (or 864636 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 249013728 is about 15780.1688203897. The cubic root of 249013728 is about 629.1310165923.

The spelling of 249013728 in words is "two hundred forty-nine million, thirteen thousand, seven hundred twenty-eight".