20040604002 has 48 divisors (see below), whose sum is σ = 44894374200. Its totient is φ = 6456001536.

The previous prime is 20040603983. The next prime is 20040604009.

20040604002 is a `hidden beast` number, since 20 + 0 + 40 + 604 + 0 + 0 + 2 = 666.

20040604002 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 18287423361 + 1753180641 = 135231^2 + 41871^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20040604009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1743 + ... + 200210.

Almost surely, 2^20040604002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20040604002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22447187100).

20040604002 is an abundant number, since it is smaller than the sum of its proper divisors (24853770198).

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

20040604002 is a wasteful number, since it uses less digits than its factorization.

20040604002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202147 (or 202144 counting only the distinct ones).

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

The spelling of 20040604002 in words is "twenty billion, forty million, six hundred four thousand, two".