20002645432 has 32 divisors (see below), whose sum is σ = 46759432320. Its totient is φ = 7793238240.

The previous prime is 20002645373. The next prime is 20002645463. The reversal of 20002645432 is 23454620002.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 20002645432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16235298 + ... + 16236529.

It is an arithmetic number, because the mean of its divisors is an integer number (1461232260).

Almost surely, 2^20002645432 is an apocalyptic number.

20002645432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20002645432 is an abundant number, since it is smaller than the sum of its proper divisors (26756786888).

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

20002645432 is a wasteful number, since it uses less digits than its factorization.

20002645432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32471851 (or 32471847 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The spelling of 20002645432 in words is "twenty billion, two million, six hundred forty-five thousand, four hundred thirty-two".