20516854 has 8 divisors (see below), whose sum is σ = 31768128. Its totient is φ = 9927480.

The previous prime is 20516849. The next prime is 20516861. The reversal of 20516854 is 45861502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165397 + ... + 165520.

It is an arithmetic number, because the mean of its divisors is an integer number (3971016).

Almost surely, 2^20516854 is an apocalyptic number.

20516854 is a deficient number, since it is larger than the sum of its proper divisors (11251274).

20516854 is a wasteful number, since it uses less digits than its factorization.

20516854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330950.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 20516854 is about 4529.5533996190. The cubic root of 20516854 is about 273.7601662856.

The spelling of 20516854 in words is "twenty million, five hundred sixteen thousand, eight hundred fifty-four".