20853046 has 4 divisors (see below), whose sum is σ = 31279572. Its totient is φ = 10426522.

The previous prime is 20853043. The next prime is 20853047. The reversal of 20853046 is 64035802.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20853043) by changing a digit.

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 as a sum of consecutive naturals, namely, 5213260 + ... + 5213263.

It is an arithmetic number, because the mean of its divisors is an integer number (7819893).

Almost surely, 2^20853046 is an apocalyptic number.

20853046 is a deficient number, since it is larger than the sum of its proper divisors (10426526).

20853046 is a wasteful number, since it uses less digits than its factorization.

20853046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10426525.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20853046 is about 4566.5135497445. The cubic root of 20853046 is about 275.2473631046.

Adding to 20853046 its reverse (64035802), we get a palindrome (84888848).

The spelling of 20853046 in words is "twenty million, eight hundred fifty-three thousand, forty-six".