20249173 has 8 divisors (see below), whose sum is σ = 23680448. Its totient is φ = 16952544.

The previous prime is 20249167. The next prime is 20249179. The reversal of 20249173 is 37194202.

It is an interprime number because it is at equal distance from previous prime (20249167) and next prime (20249179).

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

It is not a de Polignac number, because 20249173 - 2²¹ = 18152021 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 (20249179) 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, 33336 + ... + 33937.

It is an arithmetic number, because the mean of its divisors is an integer number (2960056).

Almost surely, 2^20249173 is an apocalyptic number.

It is an amenable number.

20249173 is a deficient number, since it is larger than the sum of its proper divisors (3431275).

20249173 is an equidigital number, since it uses as much as digits as its factorization.

20249173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67323.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 20249173 is about 4499.9081101729. The cubic root of 20249173 is about 272.5643783589.

The spelling of 20249173 in words is "twenty million, two hundred forty-nine thousand, one hundred seventy-three".