20887632 has 100 divisors (see below), whose sum is σ = 61576416. Its totient is φ = 6834240.

The previous prime is 20887621. The next prime is 20887649. The reversal of 20887632 is 23678802.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 91903 + ... + 92129.

Almost surely, 2^20887632 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 20887632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30788208).

20887632 is an abundant number, since it is smaller than the sum of its proper divisors (40688784).

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

20887632 is a wasteful number, since it uses less digits than its factorization.

20887632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 20887632 is about 4570.2988961336. The cubic root of 20887632 is about 275.3994503528.

The spelling of 20887632 in words is "twenty million, eight hundred eighty-seven thousand, six hundred thirty-two".