20359872 has 84 divisors (see below), whose sum is σ = 62870080. Its totient is φ = 6262272.

The previous prime is 20359861. The next prime is 20359873. The reversal of 20359872 is 27895302.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (20359873) 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, 6129 + ... + 8847.

Almost surely, 2^20359872 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 20359872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31435040).

20359872 is an abundant number, since it is smaller than the sum of its proper divisors (42510208).

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

20359872 is a wasteful number, since it uses less digits than its factorization.

20359872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2750 (or 2737 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 20359872 is about 4512.1914852985. The cubic root of 20359872 is about 273.0601646571.

The spelling of 20359872 in words is "twenty million, three hundred fifty-nine thousand, eight hundred seventy-two".