28019135 has 8 divisors (see below), whose sum is σ = 33658416. Its totient is φ = 22391680.

The previous prime is 28019099. The next prime is 28019137. The reversal of 28019135 is 53191082.

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

It is not a de Polignac number, because 28019135 - 2¹⁸ = 27756991 is a prime.

It is a super-2 number, since 2×28019135² = 1570143852296450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28019098 and 28019107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28019137) 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, 3575 + ... + 8295.

It is an arithmetic number, because the mean of its divisors is an integer number (4207302).

Almost surely, 2^28019135 is an apocalyptic number.

28019135 is a deficient number, since it is larger than the sum of its proper divisors (5639281).

28019135 is a wasteful number, since it uses less digits than its factorization.

28019135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5913.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 28019135 is about 5293.3104008739. The cubic root of 28019135 is about 303.7280542099.

The spelling of 28019135 in words is "twenty-eight million, nineteen thousand, one hundred thirty-five".