20613852 has 120 divisors (see below), whose sum is σ = 63016800. Its totient is φ = 5754240.

The previous prime is 20613829. The next prime is 20613863. The reversal of 20613852 is 25831602.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 138274 + ... + 138422.

It is an arithmetic number, because the mean of its divisors is an integer number (525140).

Almost surely, 2^20613852 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 20613852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31508400).

20613852 is an abundant number, since it is smaller than the sum of its proper divisors (42402948).

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

20613852 is a wasteful number, since it uses less digits than its factorization.

20613852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 20613852 is about 4540.2480108470. The cubic root of 20613852 is about 274.1909089201.

The spelling of 20613852 in words is "twenty million, six hundred thirteen thousand, eight hundred fifty-two".