28055234 has 16 divisors (see below), whose sum is σ = 43394400. Its totient is φ = 13595040.

The previous prime is 28055233. The next prime is 28055257. The reversal of 28055234 is 43255082.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28055197 and 28055206.

It is not an unprimeable number, because it can be changed into a prime (28055231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12317 + ... + 14415.

It is an arithmetic number, because the mean of its divisors is an integer number (2712150).

Almost surely, 2^28055234 is an apocalyptic number.

28055234 is a deficient number, since it is larger than the sum of its proper divisors (15339166).

28055234 is a wasteful number, since it uses less digits than its factorization.

28055234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 28055234 is about 5296.7191732241. The cubic root of 28055234 is about 303.8584362235.

The spelling of 28055234 in words is "twenty-eight million, fifty-five thousand, two hundred thirty-four".