249471202720 has 48 divisors (see below), whose sum is σ = 589542111648. Its totient is φ = 99760308480.

The previous prime is 249471202709. The next prime is 249471202741. The reversal of 249471202720 is 27202174942.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353047 + ... + 789673.

It is an arithmetic number, because the mean of its divisors is an integer number (12282127326).

Almost surely, 2^249471202720 is an apocalyptic number.

249471202720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249471202720 is an abundant number, since it is smaller than the sum of its proper divisors (340070908928).

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

249471202720 is a wasteful number, since it uses less digits than its factorization.

249471202720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440213 (or 440205 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 249471202720 in words is "two hundred forty-nine billion, four hundred seventy-one million, two hundred two thousand, seven hundred twenty".