20187296 has 48 divisors (see below), whose sum is σ = 43110144. Its totient is φ = 9268224.

The previous prime is 20187289. The next prime is 20187317. The reversal of 20187296 is 69278102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22961 + ... + 23823.

It is an arithmetic number, because the mean of its divisors is an integer number (898128).

Almost surely, 2^20187296 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 20187296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21555072).

20187296 is an abundant number, since it is smaller than the sum of its proper divisors (22922848).

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

20187296 is a wasteful number, since it uses less digits than its factorization.

20187296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933 (or 925 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 20187296 is about 4493.0274871182. The cubic root of 20187296 is about 272.2864629051.

The spelling of 20187296 in words is "twenty million, one hundred eighty-seven thousand, two hundred ninety-six".