20854351 has 12 divisors (see below), whose sum is σ = 25043520. Its totient is φ = 17297280.

The previous prime is 20854319. The next prime is 20854357. The reversal of 20854351 is 15345802.

It is not a de Polignac number, because 20854351 - 2⁵ = 20854319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20854357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5346 + ... + 8383.

It is an arithmetic number, because the mean of its divisors is an integer number (2086960).

Almost surely, 2^20854351 is an apocalyptic number.

20854351 is a deficient number, since it is larger than the sum of its proper divisors (4189169).

20854351 is a wasteful number, since it uses less digits than its factorization.

20854351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13774 (or 13767 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 20854351 is about 4566.6564355117. The cubic root of 20854351 is about 275.2531047169.

The spelling of 20854351 in words is "twenty million, eight hundred fifty-four thousand, three hundred fifty-one".