28170553 has 8 divisors (see below), whose sum is σ = 28748160. Its totient is φ = 27596400.

The previous prime is 28170539. The next prime is 28170557. The reversal of 28170553 is 35507182.

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

It is a cyclic number.

It is not a de Polignac number, because 28170553 - 2¹³ = 28162361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28170557) 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, 21003 + ... + 22303.

It is an arithmetic number, because the mean of its divisors is an integer number (3593520).

Almost surely, 2^28170553 is an apocalyptic number.

It is an amenable number.

28170553 is a deficient number, since it is larger than the sum of its proper divisors (577607).

28170553 is a wasteful number, since it uses less digits than its factorization.

28170553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 28170553 is about 5307.5938993107. The cubic root of 28170553 is about 304.2741964302.

The spelling of 28170553 in words is "twenty-eight million, one hundred seventy thousand, five hundred fifty-three".