20853297 has 24 divisors (see below), whose sum is σ = 31868928. Its totient is φ = 13118400.

The previous prime is 20853293. The next prime is 20853299. The reversal of 20853297 is 79235802.

It is a happy number.

It is not a de Polignac number, because 20853297 - 2² = 20853293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20853293) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10528 + ... + 12350.

It is an arithmetic number, because the mean of its divisors is an integer number (1327872).

Almost surely, 2^20853297 is an apocalyptic number.

It is an amenable number.

20853297 is a deficient number, since it is larger than the sum of its proper divisors (11015631).

20853297 is a wasteful number, since it uses less digits than its factorization.

20853297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901 (or 1898 counting only the distinct ones).

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

The square root of 20853297 is about 4566.5410323351. The cubic root of 20853297 is about 275.2484674486.

The spelling of 20853297 in words is "twenty million, eight hundred fifty-three thousand, two hundred ninety-seven".