20028854 has 4 divisors (see below), whose sum is σ = 30043284. Its totient is φ = 10014426.

The previous prime is 20028829. The next prime is 20028863. The reversal of 20028854 is 45882002.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5007212 + ... + 5007215.

It is an arithmetic number, because the mean of its divisors is an integer number (7510821).

Almost surely, 2^20028854 is an apocalyptic number.

20028854 is a deficient number, since it is larger than the sum of its proper divisors (10014430).

20028854 is a wasteful number, since it uses less digits than its factorization.

20028854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10014429.

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

The square root of 20028854 is about 4475.3607675806. The cubic root of 20028854 is about 271.5722352780.

The spelling of 20028854 in words is "twenty million, twenty-eight thousand, eight hundred fifty-four".