20456854 has 16 divisors (see below), whose sum is σ = 33566400. Its totient is φ = 9273160.

The previous prime is 20456851. The next prime is 20456879. The reversal of 20456854 is 45865402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20456851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8697 + ... + 10795.

It is an arithmetic number, because the mean of its divisors is an integer number (2097900).

Almost surely, 2^20456854 is an apocalyptic number.

20456854 is a deficient number, since it is larger than the sum of its proper divisors (13109546).

20456854 is a wasteful number, since it uses less digits than its factorization.

20456854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555.

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 20456854 is about 4522.9253807685. The cubic root of 20456854 is about 273.4930420332.

The spelling of 20456854 in words is "twenty million, four hundred fifty-six thousand, eight hundred fifty-four".