20244489 has 4 divisors (see below), whose sum is σ = 26992656. Its totient is φ = 13496324.

The previous prime is 20244479. The next prime is 20244491. The reversal of 20244489 is 98444202.

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 20244489 - 2⁷ = 20244361 is a prime.

It is a super-2 number, since 2×20244489² = 819678669742242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20244409) 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, 3374079 + ... + 3374084.

It is an arithmetic number, because the mean of its divisors is an integer number (6748164).

Almost surely, 2^20244489 is an apocalyptic number.

It is an amenable number.

20244489 is a deficient number, since it is larger than the sum of its proper divisors (6748167).

20244489 is an equidigital number, since it uses as much as digits as its factorization.

20244489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6748166.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 20244489 is about 4499.3876249997. The cubic root of 20244489 is about 272.5433603812.

The spelling of 20244489 in words is "twenty million, two hundred forty-four thousand, four hundred eighty-nine".