32020389 has 6 divisors (see below), whose sum is σ = 46251686. Its totient is φ = 21346920.

The previous prime is 32020381. The next prime is 32020403. The reversal of 32020389 is 98302023.

It can be written as a sum of positive squares in only one way, i.e., 20629764 + 11390625 = 4542^2 + 3375^2 .

It is not a de Polignac number, because 32020389 - 2³ = 32020381 is a prime.

It is a super-2 number, since 2×32020389² = 2050610623422642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32020381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1778902 + ... + 1778919.

Almost surely, 2^32020389 is an apocalyptic number.

It is an amenable number.

32020389 is a deficient number, since it is larger than the sum of its proper divisors (14231297).

32020389 is a wasteful number, since it uses less digits than its factorization.

32020389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3557827 (or 3557824 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 32020389 is about 5658.6561125412. The cubic root of 32020389 is about 317.5476242447.

The spelling of 32020389 in words is "thirty-two million, twenty thousand, three hundred eighty-nine".