20769852 has 72 divisors (see below), whose sum is σ = 52916976. Its totient is φ = 6336512.

The previous prime is 20769823. The next prime is 20769857. The reversal of 20769852 is 25896702.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20769852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20769857) 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, 183748 + ... + 183860.

It is an arithmetic number, because the mean of its divisors is an integer number (734958).

Almost surely, 2^20769852 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 20769852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26458488).

20769852 is an abundant number, since it is smaller than the sum of its proper divisors (32147124).

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

20769852 is a wasteful number, since it uses less digits than its factorization.

20769852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 20769852 is about 4557.3953087262. The cubic root of 20769852 is about 274.8808387314.

The spelling of 20769852 in words is "twenty million, seven hundred sixty-nine thousand, eight hundred fifty-two".