32020391 has 8 divisors (see below), whose sum is σ = 34539120. Its totient is φ = 29509632.

The previous prime is 32020381. The next prime is 32020403. The reversal of 32020391 is 19302023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 32020391 - 2⁶ = 32020327 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 8396 + ... + 11598.

It is an arithmetic number, because the mean of its divisors is an integer number (4317390).

Almost surely, 2^32020391 is an apocalyptic number.

32020391 is a deficient number, since it is larger than the sum of its proper divisors (2518729).

32020391 is a wasteful number, since it uses less digits than its factorization.

32020391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3985.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 32020391 is about 5658.6562892616. The cubic root of 32020391 is about 317.5476308561.

The spelling of 32020391 in words is "thirty-two million, twenty thousand, three hundred ninety-one".