28553853 has 4 divisors (see below), whose sum is σ = 38071808. Its totient is φ = 19035900.

The previous prime is 28553831. The next prime is 28553867. The reversal of 28553853 is 35835582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28553853 - 2⁸ = 28553597 is a prime.

It is a super-3 number, since 3×28553853³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28553453) 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, 4758973 + ... + 4758978.

It is an arithmetic number, because the mean of its divisors is an integer number (9517952).

Almost surely, 2^28553853 is an apocalyptic number.

It is an amenable number.

28553853 is a deficient number, since it is larger than the sum of its proper divisors (9517955).

28553853 is an equidigital number, since it uses as much as digits as its factorization.

28553853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9517954.

The product of its digits is 144000, while the sum is 39.

The square root of 28553853 is about 5343.5805411727. The cubic root of 28553853 is about 305.6480104036.

The spelling of 28553853 in words is "twenty-eight million, five hundred fifty-three thousand, eight hundred fifty-three".