20432402004 has 72 divisors (see below), whose sum is σ = 55479577440. Its totient is φ = 5835703104.

The previous prime is 20432401999. The next prime is 20432402009. The reversal of 20432402004 is 40020423402.

It is an interprime number because it is at equal distance from previous prime (20432401999) and next prime (20432402009).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432402009) 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, 2363562 + ... + 2372190.

Almost surely, 2^20432402004 is an apocalyptic number.

It is an amenable number.

20432402004 is an abundant number, since it is smaller than the sum of its proper divisors (35047175436).

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

20432402004 is a wasteful number, since it uses less digits than its factorization.

20432402004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12677 (or 12668 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 20432402004 its reverse (40020423402), we get a palindrome (60452825406).

The spelling of 20432402004 in words is "twenty billion, four hundred thirty-two million, four hundred two thousand, four".