40513828 has 12 divisors (see below), whose sum is σ = 71957872. Its totient is φ = 19954440.

The previous prime is 40513801. The next prime is 40513829. The reversal of 40513828 is 82831504.

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 self number, because there is not a number n which added to its sum of digits gives 40513828.

It is not an unprimeable number, because it can be changed into a prime (40513829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75318 + ... + 75853.

Almost surely, 2^40513828 is an apocalyptic number.

It is an amenable number.

40513828 is a deficient number, since it is larger than the sum of its proper divisors (31444044).

40513828 is a wasteful number, since it uses less digits than its factorization.

40513828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151242 (or 151240 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 40513828 is about 6365.0473682448. The cubic root of 40513828 is about 343.4533525373.

The spelling of 40513828 in words is "forty million, five hundred thirteen thousand, eight hundred twenty-eight".