28135155 has 8 divisors (see below), whose sum is σ = 45016272. Its totient is φ = 15005408.

The previous prime is 28135147. The next prime is 28135157. The reversal of 28135155 is 55153182.

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 28135155 - 2³ = 28135147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28135157) 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, 937824 + ... + 937853.

It is an arithmetic number, because the mean of its divisors is an integer number (5627034).

Almost surely, 2^28135155 is an apocalyptic number.

28135155 is a deficient number, since it is larger than the sum of its proper divisors (16881117).

28135155 is a wasteful number, since it uses less digits than its factorization.

28135155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875685.

The product of its digits is 6000, while the sum is 30.

The square root of 28135155 is about 5304.2581950731. The cubic root of 28135155 is about 304.1466967144.

The spelling of 28135155 in words is "twenty-eight million, one hundred thirty-five thousand, one hundred fifty-five".