20441544 has 16 divisors (see below), whose sum is σ = 51103920. Its totient is φ = 6813840.

The previous prime is 20441471. The next prime is 20441563. The reversal of 20441544 is 44514402.

It is a happy number.

It is a super-2 number, since 2×20441544² = 835713442207872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 851731 = 20441544 / (2 + 0 + 4 + 4 + 1 + 5 + 4 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425842 + ... + 425889.

It is an arithmetic number, because the mean of its divisors is an integer number (3193995).

Almost surely, 2^20441544 is an apocalyptic number.

20441544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20441544 is an abundant number, since it is smaller than the sum of its proper divisors (30662376).

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

20441544 is a wasteful number, since it uses less digits than its factorization.

20441544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851740 (or 851736 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 20441544 is about 4521.2325753051. The cubic root of 20441544 is about 273.4247972047.

Adding to 20441544 its reverse (44514402), we get a palindrome (64955946).

The spelling of 20441544 in words is "twenty million, four hundred forty-one thousand, five hundred forty-four".