20785752 has 96 divisors (see below), whose sum is σ = 61916400. Its totient is φ = 6259968.

The previous prime is 20785733. The next prime is 20785757. The reversal of 20785752 is 25758702.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20785757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49399 + ... + 49817.

Almost surely, 2^20785752 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 20785752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30958200).

20785752 is an abundant number, since it is smaller than the sum of its proper divisors (41130648).

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

20785752 is a wasteful number, since it uses less digits than its factorization.

20785752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 20785752 is about 4559.1393924731. The cubic root of 20785752 is about 274.9509642596.

The spelling of 20785752 in words is "twenty million, seven hundred eighty-five thousand, seven hundred fifty-two".