40066256 has 10 divisors (see below), whose sum is σ = 77628402. Its totient is φ = 20033120.

The previous prime is 40066241. The next prime is 40066259. The reversal of 40066256 is 65266004.

It can be written as a sum of positive squares in only one way, i.e., 39488656 + 577600 = 6284^2 + 760^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40066259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252055 + ... + 1252086.

Almost surely, 2^40066256 is an apocalyptic number.

It is an amenable number.

40066256 is a deficient number, since it is larger than the sum of its proper divisors (37562146).

40066256 is a wasteful number, since it uses less digits than its factorization.

40066256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504149 (or 2504143 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 40066256 is about 6329.7911497932. The cubic root of 40066256 is about 342.1839121174.

The spelling of 40066256 in words is "forty million, sixty-six thousand, two hundred fifty-six".