20253168 has 120 divisors (see below), whose sum is σ = 63190400. Its totient is φ = 6013440.

The previous prime is 20253161. The next prime is 20253169. The reversal of 20253168 is 86135202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20253161) 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 23 ways as a sum of consecutive naturals, for example, 57858 + ... + 58206.

Almost surely, 2^20253168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20253168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31595200).

20253168 is an abundant number, since it is smaller than the sum of its proper divisors (42937232).

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

20253168 is a wasteful number, since it uses less digits than its factorization.

20253168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 20253168 is about 4500.3519862340. The cubic root of 20253168 is about 272.5823021047.

The spelling of 20253168 in words is "twenty million, two hundred fifty-three thousand, one hundred sixty-eight".