20168544 has 96 divisors (see below), whose sum is σ = 58786560. Its totient is φ = 6003200.

The previous prime is 20168527. The next prime is 20168573. The reversal of 20168544 is 44586102.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74842 + ... + 75110.

It is an arithmetic number, because the mean of its divisors is an integer number (612360).

Almost surely, 2^20168544 is an apocalyptic number.

20168544 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 20168544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29393280).

20168544 is an abundant number, since it is smaller than the sum of its proper divisors (38618016).

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

20168544 is a wasteful number, since it uses less digits than its factorization.

20168544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 20168544 is about 4490.9402133629. The cubic root of 20168544 is about 272.2021277283.

The spelling of 20168544 in words is "twenty million, one hundred sixty-eight thousand, five hundred forty-four".