240021328 has 20 divisors (see below), whose sum is σ = 465372000. Its totient is φ = 119925344.

The previous prime is 240021323. The next prime is 240021329. The reversal of 240021328 is 823120042.

It is a super-2 number, since 2×240021328² = 115220475789767168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 240021299 and 240021308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240021323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22173 + ... + 31171.

It is an arithmetic number, because the mean of its divisors is an integer number (23268600).

Almost surely, 2^240021328 is an apocalyptic number.

It is an amenable number.

240021328 is a deficient number, since it is larger than the sum of its proper divisors (225350672).

240021328 is a wasteful number, since it uses less digits than its factorization.

240021328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10674 (or 10668 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 240021328 is about 15492.6217277774. The cubic root of 240021328 is about 621.4649092719.

The spelling of 240021328 in words is "two hundred forty million, twenty-one thousand, three hundred twenty-eight".