20959232 has 104 divisors (see below), whose sum is σ = 51898176. Its totient is φ = 8257536.

The previous prime is 20959231. The next prime is 20959247. The reversal of 20959232 is 23295902.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20959231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487403 + ... + 487445.

Almost surely, 2^20959232 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 20959232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25949088).

20959232 is an abundant number, since it is smaller than the sum of its proper divisors (30938944).

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

20959232 is an equidigital number, since it uses as much as digits as its factorization.

20959232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 20959232 is about 4578.1253805461. The cubic root of 20959232 is about 275.7137689337.

The spelling of 20959232 in words is "twenty million, nine hundred fifty-nine thousand, two hundred thirty-two".