40204636 has 12 divisors (see below), whose sum is σ = 70446040. Its totient is φ = 20077200.

The previous prime is 40204631. The next prime is 40204639. The reversal of 40204636 is 63640204.

It is a self number, because there is not a number n which added to its sum of digits gives 40204636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40204631) 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, 2415 + ... + 9286.

Almost surely, 2^40204636 is an apocalyptic number.

It is an amenable number.

40204636 is a deficient number, since it is larger than the sum of its proper divisors (30241404).

40204636 is a wasteful number, since it uses less digits than its factorization.

40204636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12564 (or 12562 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 40204636 is about 6340.7125782518. The cubic root of 40204636 is about 342.5774020103.

The spelling of 40204636 in words is "forty million, two hundred four thousand, six hundred thirty-six".