40028504 has 16 divisors (see below), whose sum is σ = 75145320. Its totient is φ = 19989760.

The previous prime is 40028503. The next prime is 40028507. The reversal of 40028504 is 40582004.

It is a super-2 number, since 2×40028504² = 3204562264956032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40028504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40028501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5192 + ... + 10344.

Almost surely, 2^40028504 is an apocalyptic number.

It is an amenable number.

40028504 is a deficient number, since it is larger than the sum of its proper divisors (35116816).

40028504 is a wasteful number, since it uses less digits than its factorization.

40028504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6130 (or 6126 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 40028504 is about 6326.8083580902. The cubic root of 40028504 is about 342.0764053042.

The spelling of 40028504 in words is "forty million, twenty-eight thousand, five hundred four".