20402203032 has 24 divisors (see below), whose sum is σ = 55255966740. Its totient is φ = 6800734320.

The previous prime is 20402203027. The next prime is 20402203043. The reversal of 20402203032 is 23030220402.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a junction number, because it is equal to n+sod(n) for n = 20402202996 and 20402203014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141681894 + ... + 141682037.

Almost surely, 2^20402203032 is an apocalyptic number.

It is an amenable number.

20402203032 is an abundant number, since it is smaller than the sum of its proper divisors (34853763708).

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

20402203032 is a wasteful number, since it uses less digits than its factorization.

20402203032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283363943 (or 283363936 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 20402203032 its reverse (23030220402), we get a palindrome (43432423434).

The spelling of 20402203032 in words is "twenty billion, four hundred two million, two hundred three thousand, thirty-two".