20252544 has 64 divisors (see below), whose sum is σ = 57948240. Its totient is φ = 6230016.

The previous prime is 20252543. The next prime is 20252611. The reversal of 20252544 is 44525202.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20252543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2964 + ... + 7020.

Almost surely, 2^20252544 is an apocalyptic number.

20252544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20252544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28974120).

20252544 is an abundant number, since it is smaller than the sum of its proper divisors (37695696).

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

20252544 is a wasteful number, since it uses less digits than its factorization.

20252544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4087 (or 4075 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 20252544 is about 4500.2826577894. The cubic root of 20252544 is about 272.5795026562.

Adding to 20252544 its reverse (44525202), we get a palindrome (64777746).

The spelling of 20252544 in words is "twenty million, two hundred fifty-two thousand, five hundred forty-four".