40566720 has 56 divisors (see below), whose sum is σ = 128802384. Its totient is φ = 10817536.

The previous prime is 40566707. The next prime is 40566727. The reversal of 40566720 is 2766504.

It is a hoax number, since the sum of its digits (30) 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 (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40566727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20169 + ... + 22088.

Almost surely, 2^40566720 is an apocalyptic number.

40566720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40566720 is an abundant number, since it is smaller than the sum of its proper divisors (88235664).

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

40566720 is a wasteful number, since it uses less digits than its factorization.

40566720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42277 (or 42267 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 40566720 is about 6369.2008917917. The cubic root of 40566720 is about 343.6027503763.

The spelling of 40566720 in words is "forty million, five hundred sixty-six thousand, seven hundred twenty".