28054213 has 12 divisors (see below), whose sum is σ = 31149664. Its totient is φ = 25245000.

The previous prime is 28054211. The next prime is 28054259. The reversal of 28054213 is 31245082.

It is not a de Polignac number, because 28054213 - 2¹ = 28054211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28054211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11338 + ... + 13588.

Almost surely, 2^28054213 is an apocalyptic number.

It is an amenable number.

28054213 is a deficient number, since it is larger than the sum of its proper divisors (3095451).

28054213 is a wasteful number, since it uses less digits than its factorization.

28054213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376 (or 2365 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 28054213 is about 5296.6227919307. The cubic root of 28054213 is about 303.8547501231.

Adding to 28054213 its reverse (31245082), we get a palindrome (59299295).

The spelling of 28054213 in words is "twenty-eight million, fifty-four thousand, two hundred thirteen".