20254189 has 4 divisors (see below), whose sum is σ = 20307456. Its totient is φ = 20200924.

The previous prime is 20254183. The next prime is 20254219. The reversal of 20254189 is 98145202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20254189 - 2⁷ = 20254061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20254189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20254183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26059 + ... + 26824.

It is an arithmetic number, because the mean of its divisors is an integer number (5076864).

Almost surely, 2^20254189 is an apocalyptic number.

It is an amenable number.

20254189 is a deficient number, since it is larger than the sum of its proper divisors (53267).

20254189 is an equidigital number, since it uses as much as digits as its factorization.

20254189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53266.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 20254189 is about 4500.4654203760. The cubic root of 20254189 is about 272.5868824886.

The spelling of 20254189 in words is "twenty million, two hundred fifty-four thousand, one hundred eighty-nine".