40523764 has 12 divisors (see below), whose sum is σ = 72079588. Its totient is φ = 19929600.

The previous prime is 40523753. The next prime is 40523771. The reversal of 40523764 is 46732504.

It can be written as a sum of positive squares in 2 ways, for example, as 5808100 + 34715664 = 2410^2 + 5892^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82797 + ... + 83284.

Almost surely, 2^40523764 is an apocalyptic number.

It is an amenable number.

40523764 is a deficient number, since it is larger than the sum of its proper divisors (31555824).

40523764 is a wasteful number, since it uses less digits than its factorization.

40523764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166146 (or 166144 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 40523764 is about 6365.8278330473. The cubic root of 40523764 is about 343.4814275077.

The spelling of 40523764 in words is "forty million, five hundred twenty-three thousand, seven hundred sixty-four".