20887932 has 48 divisors (see below), whose sum is σ = 52792992. Its totient is φ = 6389760.

The previous prime is 20887931. The next prime is 20887939. The reversal of 20887932 is 23978802.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20887931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39832 + ... + 40352.

It is an arithmetic number, because the mean of its divisors is an integer number (1099854).

Almost surely, 2^20887932 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 20887932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26396496).

20887932 is an abundant number, since it is smaller than the sum of its proper divisors (31905060).

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

20887932 is a wasteful number, since it uses less digits than its factorization.

20887932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 20887932 is about 4570.3317166263. The cubic root of 20887932 is about 275.4007688274.

The spelling of 20887932 in words is "twenty million, eight hundred eighty-seven thousand, nine hundred thirty-two".