28053893 has 8 divisors (see below), whose sum is σ = 33947712. Its totient is φ = 22631616.

The previous prime is 28053887. The next prime is 28053913. The reversal of 28053893 is 39835082.

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

It is not a de Polignac number, because 28053893 - 2¹² = 28049797 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 (28053293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117755 + ... + 117992.

It is an arithmetic number, because the mean of its divisors is an integer number (4243464).

Almost surely, 2^28053893 is an apocalyptic number.

It is an amenable number.

28053893 is a deficient number, since it is larger than the sum of its proper divisors (5893819).

28053893 is a wasteful number, since it uses less digits than its factorization.

28053893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235771.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 28053893 is about 5296.5925839166. The cubic root of 28053893 is about 303.8535948136.

The spelling of 28053893 in words is "twenty-eight million, fifty-three thousand, eight hundred ninety-three".