20444774 has 8 divisors (see below), whose sum is σ = 35048208. Its totient is φ = 8762040.

The previous prime is 20444771. The next prime is 20444791. The reversal of 20444774 is 47744402.

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

It is a super-2 number, since 2×20444774² = 835977567822152, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20444774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444771) 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, 730157 + ... + 730184.

It is an arithmetic number, because the mean of its divisors is an integer number (4381026).

Almost surely, 2^20444774 is an apocalyptic number.

20444774 is a deficient number, since it is larger than the sum of its proper divisors (14603434).

20444774 is a wasteful number, since it uses less digits than its factorization.

20444774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460350.

The product of its (nonzero) digits is 25088, while the sum is 32.

The square root of 20444774 is about 4521.5897646735. The cubic root of 20444774 is about 273.4391978714.

The spelling of 20444774 in words is "twenty million, four hundred forty-four thousand, seven hundred seventy-four".