40604004 has 60 divisors (see below), whose sum is σ = 121317504. Its totient is φ = 11600496.

The previous prime is 40603967. The next prime is 40604021. The reversal of 40604004 is 40040604.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6684 + ... + 11219.

Almost surely, 2^40604004 is an apocalyptic number.

It is an amenable number.

40604004 is an abundant number, since it is smaller than the sum of its proper divisors (80713500).

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

40604004 is a wasteful number, since it uses less digits than its factorization.

40604004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17926 (or 17915 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 40604004 is about 6372.1271173761. The cubic root of 40604004 is about 343.7079841099.

Adding to 40604004 its reverse (40040604), we get a palindrome (80644608).

The spelling of 40604004 in words is "forty million, six hundred four thousand, four".