20175213 has 16 divisors (see below), whose sum is σ = 28480320. Its totient is φ = 12681984.

The previous prime is 20175193. The next prime is 20175223. The reversal of 20175213 is 31257102.

It is not a de Polignac number, because 20175213 - 2⁶ = 20175149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20175213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20175223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1045 + ... + 6437.

It is an arithmetic number, because the mean of its divisors is an integer number (1780020).

Almost surely, 2^20175213 is an apocalyptic number.

It is an amenable number.

20175213 is a deficient number, since it is larger than the sum of its proper divisors (8305107).

20175213 is a wasteful number, since it uses less digits than its factorization.

20175213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5468.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 20175213 is about 4491.6826468485. The cubic root of 20175213 is about 272.2321268520.

The spelling of 20175213 in words is "twenty million, one hundred seventy-five thousand, two hundred thirteen".