20040420232 has 48 divisors (see below), whose sum is σ = 43737877260. Its totient is φ = 8583394176.

The previous prime is 20040420209. The next prime is 20040420247. The reversal of 20040420232 is 23202404002.

It can be written as a sum of positive squares in 2 ways, for example, as 19361609316 + 678810916 = 139146^2 + 26054^2 .

It is a super-3 number, since 3×20040420232³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 648558 + ... + 678754.

Almost surely, 2^20040420232 is an apocalyptic number.

It is an amenable number.

20040420232 is an abundant number, since it is smaller than the sum of its proper divisors (23697457028).

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

20040420232 is a wasteful number, since it uses less digits than its factorization.

20040420232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31910 (or 31899 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 20040420232 its reverse (23202404002), we get a palindrome (43242824234).

The spelling of 20040420232 in words is "twenty billion, forty million, four hundred twenty thousand, two hundred thirty-two".