20280854 has 16 divisors (see below), whose sum is σ = 33279120. Its totient is φ = 9192960.

The previous prime is 20280839. The next prime is 20280859. The reversal of 20280854 is 45808202.

It is a super-2 number, since 2×20280854² = 822626077938632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20280859) 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 in 7 ways as a sum of consecutive naturals, for example, 8462 + ... + 10590.

It is an arithmetic number, because the mean of its divisors is an integer number (2079945).

Almost surely, 2^20280854 is an apocalyptic number.

20280854 is a deficient number, since it is larger than the sum of its proper divisors (12998266).

20280854 is a wasteful number, since it uses less digits than its factorization.

20280854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 20280854 is about 4503.4269173597. The cubic root of 20280854 is about 272.7064518583.

The spelling of 20280854 in words is "twenty million, two hundred eighty thousand, eight hundred fifty-four".