40635790 has 16 divisors (see below), whose sum is σ = 78771168. Its totient is φ = 15003936.

The previous prime is 40635773. The next prime is 40635799. The reversal of 40635790 is 9753604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40635799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156162 + ... + 156421.

It is an arithmetic number, because the mean of its divisors is an integer number (4923198).

Almost surely, 2^40635790 is an apocalyptic number.

40635790 is a deficient number, since it is larger than the sum of its proper divisors (38135378).

40635790 is a wasteful number, since it uses less digits than its factorization.

40635790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312603.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 40635790 is about 6374.6207730343. The cubic root of 40635790 is about 343.7976489320.

The spelling of 40635790 in words is "forty million, six hundred thirty-five thousand, seven hundred ninety".