28113375 has 32 divisors (see below), whose sum is σ = 47586240. Its totient is φ = 14736000.

The previous prime is 28113367. The next prime is 28113403. The reversal of 28113375 is 57331182.

It is not a de Polignac number, because 28113375 - 2³ = 28113367 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22261 + ... + 23489.

It is an arithmetic number, because the mean of its divisors is an integer number (1487070).

Almost surely, 2^28113375 is an apocalyptic number.

28113375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28113375 is a deficient number, since it is larger than the sum of its proper divisors (19472865).

28113375 is a wasteful number, since it uses less digits than its factorization.

28113375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308 (or 1298 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 28113375 is about 5302.2047301099. The cubic root of 28113375 is about 304.0681943908.

The spelling of 28113375 in words is "twenty-eight million, one hundred thirteen thousand, three hundred seventy-five".