20532798 has 64 divisors (see below), whose sum is σ = 53625600. Its totient is φ = 5741280.

The previous prime is 20532797. The next prime is 20532803. The reversal of 20532798 is 89723502.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20532791) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6393 + ... + 9051.

It is an arithmetic number, because the mean of its divisors is an integer number (837900).

Almost surely, 2^20532798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20532798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26812800).

20532798 is an abundant number, since it is smaller than the sum of its proper divisors (33092802).

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

20532798 is a wasteful number, since it uses less digits than its factorization.

20532798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694 (or 2688 counting only the distinct ones).

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

The square root of 20532798 is about 4531.3130547337. The cubic root of 20532798 is about 273.8310625013.

It can be divided in two parts, 2053 and 2798, that added together give a triangular number (4851 = T₉₈).

The spelling of 20532798 in words is "twenty million, five hundred thirty-two thousand, seven hundred ninety-eight".