20253244 has 12 divisors (see below), whose sum is σ = 38665368. Its totient is φ = 9206000.

The previous prime is 20253241. The next prime is 20253347. The reversal of 20253244 is 44235202.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20253241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230107 + ... + 230194.

It is an arithmetic number, because the mean of its divisors is an integer number (3222114).

Almost surely, 2^20253244 is an apocalyptic number.

It is an amenable number.

20253244 is a deficient number, since it is larger than the sum of its proper divisors (18412124).

20253244 is a wasteful number, since it uses less digits than its factorization.

20253244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460316 (or 460314 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 20253244 is about 4500.3604300100. The cubic root of 20253244 is about 272.5826430593.

Adding to 20253244 its reverse (44235202), we get a palindrome (64488446).

The spelling of 20253244 in words is "twenty million, two hundred fifty-three thousand, two hundred forty-four".