20541888 has 84 divisors (see below), whose sum is σ = 62011560. Its totient is φ = 6483456.

The previous prime is 20541887. The next prime is 20541893. The reversal of 20541888 is 88814502.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20541881) 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 11 ways as a sum of consecutive naturals, for example, 10006 + ... + 11882.

Almost surely, 2^20541888 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 20541888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31005780).

20541888 is an abundant number, since it is smaller than the sum of its proper divisors (41469672).

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

20541888 is a wasteful number, since it uses less digits than its factorization.

20541888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914 (or 1901 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 20541888 is about 4532.3159642726. The cubic root of 20541888 is about 273.8714654561.

The spelling of 20541888 in words is "twenty million, five hundred forty-one thousand, eight hundred eighty-eight".