20853245 has 8 divisors (see below), whose sum is σ = 28598784. Its totient is φ = 14299344.

The previous prime is 20853229. The next prime is 20853257. The reversal of 20853245 is 54235802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20853245 - 2⁴ = 20853229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297869 + ... + 297938.

It is an arithmetic number, because the mean of its divisors is an integer number (3574848).

Almost surely, 2^20853245 is an apocalyptic number.

It is an amenable number.

20853245 is a deficient number, since it is larger than the sum of its proper divisors (7745539).

20853245 is an equidigital number, since it uses as much as digits as its factorization.

20853245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595819.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 20853245 is about 4566.5353387442. The cubic root of 20853245 is about 275.2482386609.

The spelling of 20853245 in words is "twenty million, eight hundred fifty-three thousand, two hundred forty-five".