20453652 has 72 divisors (see below), whose sum is σ = 57657600. Its totient is φ = 6075648.

The previous prime is 20453639. The next prime is 20453663. The reversal of 20453652 is 25635402.

20453652 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 3 + 652 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10749 + ... + 12507.

It is an arithmetic number, because the mean of its divisors is an integer number (800800).

Almost surely, 2^20453652 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 20453652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28828800).

20453652 is an abundant number, since it is smaller than the sum of its proper divisors (37203948).

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

20453652 is a wasteful number, since it uses less digits than its factorization.

20453652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805 (or 1800 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 20453652 is about 4522.5713924713. The cubic root of 20453652 is about 273.4787718296.

The spelling of 20453652 in words is "twenty million, four hundred fifty-three thousand, six hundred fifty-two".