28026115 has 24 divisors (see below), whose sum is σ = 38579328. Its totient is φ = 19468800.

The previous prime is 28026079. The next prime is 28026137. The reversal of 28026115 is 51162082.

It is not a de Polignac number, because 28026115 - 2¹³ = 28017923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28026115.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13390 + ... + 15340.

It is an arithmetic number, because the mean of its divisors is an integer number (1607472).

Almost surely, 2^28026115 is an apocalyptic number.

28026115 is a deficient number, since it is larger than the sum of its proper divisors (10553213).

28026115 is a wasteful number, since it uses less digits than its factorization.

28026115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999 (or 1986 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 28026115 is about 5293.9696825728. The cubic root of 28026115 is about 303.7532732349.

Adding to 28026115 its reverse (51162082), we get a palindrome (79188197).

The spelling of 28026115 in words is "twenty-eight million, twenty-six thousand, one hundred fifteen".