40021036 has 24 divisors (see below), whose sum is σ = 77199696. Its totient is φ = 18001920.

The previous prime is 40021021. The next prime is 40021061. The reversal of 40021036 is 63012004.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 421 + ... + 8956.

It is an arithmetic number, because the mean of its divisors is an integer number (3216654).

Almost surely, 2^40021036 is an apocalyptic number.

It is an amenable number.

40021036 is a deficient number, since it is larger than the sum of its proper divisors (37178660).

40021036 is a wasteful number, since it uses less digits than its factorization.

40021036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9489 (or 9487 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 40021036 is about 6326.2181435673. The cubic root of 40021036 is about 342.0551305856.

The spelling of 40021036 in words is "forty million, twenty-one thousand, thirty-six".