28113255 has 48 divisors (see below), whose sum is σ = 51891840. Its totient is φ = 14040000.

The previous prime is 28113251. The next prime is 28113259. The reversal of 28113255 is 55231182.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28113251) and next prime (28113259).

It is not a de Polignac number, because 28113255 - 2² = 28113251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28113251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111880 + ... + 112130.

It is an arithmetic number, because the mean of its divisors is an integer number (1081080).

Almost surely, 2^28113255 is an apocalyptic number.

28113255 is a deficient number, since it is larger than the sum of its proper divisors (23778585).

28113255 is a wasteful number, since it uses less digits than its factorization.

28113255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 409 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 28113255 is about 5302.1934140505. The cubic root of 28113255 is about 304.0677617588.

The spelling of 28113255 in words is "twenty-eight million, one hundred thirteen thousand, two hundred fifty-five".