40020204 has 48 divisors (see below), whose sum is σ = 107106048. Its totient is φ = 11393088.

The previous prime is 40020191. The next prime is 40020221. The reversal of 40020204 is 40202004.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 40020204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28462 + ... + 29834.

It is an arithmetic number, because the mean of its divisors is an integer number (2231376).

Almost surely, 2^40020204 is an apocalyptic number.

It is an amenable number.

40020204 is an abundant number, since it is smaller than the sum of its proper divisors (67085844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40020204 is a wasteful number, since it uses less digits than its factorization.

40020204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734 (or 1732 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 40020204 is about 6326.1523851390. The cubic root of 40020204 is about 342.0527602335.

Adding to 40020204 its reverse (40202004), we get a palindrome (80222208).

The spelling of 40020204 in words is "forty million, twenty thousand, two hundred four".