40056066 has 32 divisors (see below), whose sum is σ = 93700800. Its totient is φ = 12648960.

The previous prime is 40056031. The next prime is 40056067. The reversal of 40056066 is 66065004.

40056066 is a `hidden beast` number, since 40 + 0 + 560 + 66 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40056067) 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, 18495 + ... + 20546.

It is an arithmetic number, because the mean of its divisors is an integer number (2928150).

Almost surely, 2^40056066 is an apocalyptic number.

40056066 is an abundant number, since it is smaller than the sum of its proper divisors (53644734).

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

40056066 is a wasteful number, since it uses less digits than its factorization.

40056066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39071 (or 39065 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 40056066 is about 6328.9861747360. The cubic root of 40056066 is about 342.1549005912.

The spelling of 40056066 in words is "forty million, fifty-six thousand, sixty-six", and thus it is an eban number.