20680854 has 32 divisors (see below), whose sum is σ = 44724480. Its totient is φ = 6352992.

The previous prime is 20680843. The next prime is 20680867. The reversal of 20680854 is 45808602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1767 + ... + 6669.

It is an arithmetic number, because the mean of its divisors is an integer number (1397640).

Almost surely, 2^20680854 is an apocalyptic number.

20680854 is an abundant number, since it is smaller than the sum of its proper divisors (24043626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20680854 is a wasteful number, since it uses less digits than its factorization.

20680854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4964.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 20680854 is about 4547.6206965841. The cubic root of 20680854 is about 274.4876587429.

The spelling of 20680854 in words is "twenty million, six hundred eighty thousand, eight hundred fifty-four".