20012433232 has 80 divisors (see below), whose sum is σ = 43550926848. Its totient is φ = 8829959040.

The previous prime is 20012433223. The next prime is 20012433263. The reversal of 20012433232 is 23233421002.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1225473 + ... + 1241695.

Almost surely, 2^20012433232 is an apocalyptic number.

20012433232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20012433232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21775463424).

20012433232 is an abundant number, since it is smaller than the sum of its proper divisors (23538493616).

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

20012433232 is a wasteful number, since it uses less digits than its factorization.

20012433232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16448 (or 16442 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20012433232 its reverse (23233421002), we get a palindrome (43245854234).

The spelling of 20012433232 in words is "twenty billion, twelve million, four hundred thirty-three thousand, two hundred thirty-two".