2021320432 has 20 divisors (see below), whose sum is σ = 3917702376. Its totient is φ = 1010300480.

The previous prime is 2021320381. The next prime is 2021320439. The reversal of 2021320432 is 2340231202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021320439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27198 + ... + 69154.

Almost surely, 2^2021320432 is an apocalyptic number.

It is an amenable number.

2021320432 is a deficient number, since it is larger than the sum of its proper divisors (1896381944).

2021320432 is a wasteful number, since it uses less digits than its factorization.

2021320432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44976 (or 44970 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2021320432 is about 44959.0973218992. The cubic root of 2021320432 is about 1264.3822449933.

Adding to 2021320432 its reverse (2340231202), we get a palindrome (4361551634).

The spelling of 2021320432 in words is "two billion, twenty-one million, three hundred twenty thousand, four hundred thirty-two".