40013004 has 24 divisors (see below), whose sum is σ = 93511600. Its totient is φ = 13316544.

The previous prime is 40012969. The next prime is 40013023. The reversal of 40013004 is 40031004.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6522 + ... + 11070.

Almost surely, 2^40013004 is an apocalyptic number.

It is an amenable number.

40013004 is an abundant number, since it is smaller than the sum of its proper divisors (53498596).

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

40013004 is a wasteful number, since it uses less digits than its factorization.

40013004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5289 (or 5287 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 40013004 is about 6325.5832932624. The cubic root of 40013004 is about 342.0322461986.

Adding to 40013004 its reverse (40031004), we get a palindrome (80044008).

The spelling of 40013004 in words is "forty million, thirteen thousand, four".