28119755 has 4 divisors (see below), whose sum is σ = 33743712. Its totient is φ = 22495800.

The previous prime is 28119743. The next prime is 28119769. The reversal of 28119755 is 55791182.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28119755 - 2⁴ = 28119739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2811971 + ... + 2811980.

It is an arithmetic number, because the mean of its divisors is an integer number (8435928).

Almost surely, 2^28119755 is an apocalyptic number.

28119755 is a deficient number, since it is larger than the sum of its proper divisors (5623957).

28119755 is an equidigital number, since it uses as much as digits as its factorization.

28119755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5623956.

The product of its digits is 25200, while the sum is 38.

The square root of 28119755 is about 5302.8063324998. The cubic root of 28119755 is about 304.0911942185.

The spelling of 28119755 in words is "twenty-eight million, one hundred nineteen thousand, seven hundred fifty-five".