249242700720 has 480 divisors, whose sum is σ = 909190379520.
Its totient is φ = 56242667520.
The previous prime is 249242700713. The next prime is 249242700737. The reversal of 249242700720 is 27007242942.
It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.
It is a Harshad number since it is a multiple of its sum of digits (39).
It is an unprimeable number.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23884624 + ... + 23895056.
It is an arithmetic number, because the mean of its divisors is an integer number (1894146624).
Almost surely, 2249242700720 is an apocalyptic number.
249242700720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 249242700720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454595189760).
249242700720 is an abundant number, since it is smaller than the sum of its proper divisors (659947678800).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
249242700720 is a wasteful number, since it uses less digits than its factorization.
249242700720 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10525 (or 10506 counting only the distinct ones).
The product of its (nonzero) digits is 112896, while the sum is 39.
The spelling of 249242700720 in words is "two hundred forty-nine billion, two hundred forty-two million, seven hundred thousand, seven hundred twenty".