20544992 has 72 divisors (see below), whose sum is σ = 45654840. Its totient is φ = 9085440.

The previous prime is 20544991. The next prime is 20545001. The reversal of 20544992 is 29944502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20544991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156767 + ... + 156897.

It is an arithmetic number, because the mean of its divisors is an integer number (634095).

Almost surely, 2^20544992 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 20544992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22827420).

20544992 is an abundant number, since it is smaller than the sum of its proper divisors (25109848).

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

20544992 is a wasteful number, since it uses less digits than its factorization.

20544992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 20544992 is about 4532.6583811269. The cubic root of 20544992 is about 273.8852592907.

The spelling of 20544992 in words is "twenty million, five hundred forty-four thousand, nine hundred ninety-two".