40213756 has 24 divisors (see below), whose sum is σ = 77540400. Its totient is φ = 18096000.

The previous prime is 40213753. The next prime is 40213757. The reversal of 40213756 is 65731204.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40213753) 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, 81 + ... + 8968.

It is an arithmetic number, because the mean of its divisors is an integer number (3230850).

Almost surely, 2^40213756 is an apocalyptic number.

It is an amenable number.

40213756 is a deficient number, since it is larger than the sum of its proper divisors (37326644).

40213756 is a wasteful number, since it uses less digits than its factorization.

40213756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9165 (or 9163 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 40213756 is about 6341.4316995455. The cubic root of 40213756 is about 342.6033034154.

It can be divided in two parts, 4021 and 3756, that added together give a palindrome (7777).

The spelling of 40213756 in words is "forty million, two hundred thirteen thousand, seven hundred fifty-six".