28285153 has 4 divisors (see below), whose sum is σ = 30460948. Its totient is φ = 26109360.

The previous prime is 28285109. The next prime is 28285171. The reversal of 28285153 is 35158282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35158282 = 2 ⋅17579141.

It can be written as a sum of positive squares in 2 ways, for example, as 9345249 + 18939904 = 3057^2 + 4352^2 .

It is a cyclic number.

It is not a de Polignac number, because 28285153 - 2¹³ = 28276961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28285253) 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, 1087878 + ... + 1087903.

It is an arithmetic number, because the mean of its divisors is an integer number (7615237).

Almost surely, 2^28285153 is an apocalyptic number.

It is an amenable number.

28285153 is a deficient number, since it is larger than the sum of its proper divisors (2175795).

28285153 is a wasteful number, since it uses less digits than its factorization.

28285153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175794.

The product of its digits is 19200, while the sum is 34.

The square root of 28285153 is about 5318.3787943320. The cubic root of 28285153 is about 304.6862418865.

The spelling of 28285153 in words is "twenty-eight million, two hundred eighty-five thousand, one hundred fifty-three".