240023280 has 80 divisors (see below), whose sum is σ = 850374144. Its totient is φ = 54862080.

The previous prime is 240023263. The next prime is 240023281. The reversal of 240023280 is 82320042.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×240023280² = 115222349883916800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240023281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69756 + ... + 73115.

Almost surely, 2^240023280 is an apocalyptic number.

240023280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240023280 is an abundant number, since it is smaller than the sum of its proper divisors (610350864).

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

240023280 is a wasteful number, since it uses less digits than its factorization.

240023280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142894 (or 142888 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 240023280 is about 15492.6847253793. The cubic root of 240023280 is about 621.4665939780.

The spelling of 240023280 in words is "two hundred forty million, twenty-three thousand, two hundred eighty".