20244132 has 18 divisors (see below), whose sum is σ = 51172758. Its totient is φ = 6748032.

The previous prime is 20244121. The next prime is 20244149. The reversal of 20244132 is 23144202.

It can be written as a sum of positive squares in only one way, i.e., 17089956 + 3154176 = 4134^2 + 1776^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 281133 + ... + 281204.

It is an arithmetic number, because the mean of its divisors is an integer number (2842931).

Almost surely, 2^20244132 is an apocalyptic number.

It is an amenable number.

20244132 is an abundant number, since it is smaller than the sum of its proper divisors (30928626).

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

20244132 is a wasteful number, since it uses less digits than its factorization.

20244132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562347 (or 562342 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 20244132 is about 4499.3479527594. The cubic root of 20244132 is about 272.5417583229.

Adding to 20244132 its reverse (23144202), we get a palindrome (43388334).

The spelling of 20244132 in words is "twenty million, two hundred forty-four thousand, one hundred thirty-two".