240557720 has 64 divisors (see below), whose sum is σ = 598691520. Its totient is φ = 86413824.

The previous prime is 240557719. The next prime is 240557731. The reversal of 240557720 is 27755042.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12989 + ... + 25491.

It is an arithmetic number, because the mean of its divisors is an integer number (9354555).

Almost surely, 2^240557720 is an apocalyptic number.

240557720 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 240557720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299345760).

240557720 is an abundant number, since it is smaller than the sum of its proper divisors (358133800).

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

240557720 is a wasteful number, since it uses less digits than its factorization.

240557720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12564 (or 12560 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 240557720 is about 15509.9232751165. The cubic root of 240557720 is about 621.9275081544.

The spelling of 240557720 in words is "two hundred forty million, five hundred fifty-seven thousand, seven hundred twenty".