20853792 has 144 divisors (see below), whose sum is σ = 64733760. Its totient is φ = 6345216.

The previous prime is 20853787. The next prime is 20853799. The reversal of 20853792 is 29735802.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is not an unprimeable number, because it can be changed into a prime (20853799) 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, 202413 + ... + 202515.

It is an arithmetic number, because the mean of its divisors is an integer number (449540).

Almost surely, 2^20853792 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 20853792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32366880).

20853792 is an abundant number, since it is smaller than the sum of its proper divisors (43879968).

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

20853792 is a wasteful number, since it uses less digits than its factorization.

20853792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 20853792 is about 4566.5952305848. The cubic root of 20853792 is about 275.2506453123.

The spelling of 20853792 in words is "twenty million, eight hundred fifty-three thousand, seven hundred ninety-two".