20628854 has 8 divisors (see below), whose sum is σ = 32763528. Its totient is φ = 9707680.

The previous prime is 20628823. The next prime is 20628859. The reversal of 20628854 is 45882602.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20628859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303332 + ... + 303399.

It is an arithmetic number, because the mean of its divisors is an integer number (4095441).

Almost surely, 2^20628854 is an apocalyptic number.

20628854 is a deficient number, since it is larger than the sum of its proper divisors (12134674).

20628854 is a wasteful number, since it uses less digits than its factorization.

20628854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606750.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 20628854 is about 4541.8998227614. The cubic root of 20628854 is about 274.2574081291.

The spelling of 20628854 in words is "twenty million, six hundred twenty-eight thousand, eight hundred fifty-four".