20444454 has 16 divisors (see below), whose sum is σ = 45432240. Its totient is φ = 6814800.

The previous prime is 20444429. The next prime is 20444471. The reversal of 20444454 is 45444402.

It is a happy number.

20444454 is a `hidden beast` number, since 204 + 4 + 4 + 454 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189247 + ... + 189354.

It is an arithmetic number, because the mean of its divisors is an integer number (2839515).

Almost surely, 2^20444454 is an apocalyptic number.

20444454 is an abundant number, since it is smaller than the sum of its proper divisors (24987786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20444454 is a wasteful number, since it uses less digits than its factorization.

20444454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378612 (or 378606 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 20444454 is about 4521.5543787507. The cubic root of 20444454 is about 273.4377712476.

Adding to 20444454 its reverse (45444402), we get a palindrome (65888856).

The spelling of 20444454 in words is "twenty million, four hundred forty-four thousand, four hundred fifty-four".