40640204 has 12 divisors (see below), whose sum is σ = 77585928. Its totient is φ = 18472800.

The previous prime is 40640177. The next prime is 40640219. The reversal of 40640204 is 40204604.

40640204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461777 + ... + 461864.

It is an arithmetic number, because the mean of its divisors is an integer number (6465494).

Almost surely, 2^40640204 is an apocalyptic number.

40640204 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40640204 is a deficient number, since it is larger than the sum of its proper divisors (36945724).

40640204 is a wasteful number, since it uses less digits than its factorization.

40640204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923656 (or 923654 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40640204 is about 6374.9669803066. The cubic root of 40640204 is about 343.8100966444.

Adding to 40640204 its reverse (40204604), we get a palindrome (80844808).

Subtracting from 40640204 its reverse (40204604), we obtain a square (435600 = 660²).

The spelling of 40640204 in words is "forty million, six hundred forty thousand, two hundred four".