20932213 has 8 divisors (see below), whose sum is σ = 21168000. Its totient is φ = 20698128.

The previous prime is 20932199. The next prime is 20932237. The reversal of 20932213 is 31223902.

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 20932213 - 2¹³ = 20924021 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 (20938213) 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, 58128 + ... + 58486.

It is an arithmetic number, because the mean of its divisors is an integer number (2646000).

Almost surely, 2^20932213 is an apocalyptic number.

It is an amenable number.

20932213 is a deficient number, since it is larger than the sum of its proper divisors (235787).

20932213 is a wasteful number, since it uses less digits than its factorization.

20932213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 20932213 is about 4575.1735486209. The cubic root of 20932213 is about 275.5952417897.

The spelling of 20932213 in words is "twenty million, nine hundred thirty-two thousand, two hundred thirteen".