28123034 has 8 divisors (see below), whose sum is σ = 43324788. Its totient is φ = 13681440.

The previous prime is 28122977. The next prime is 28123057. The reversal of 28123034 is 43032182.

It can be written as a sum of positive squares in 2 ways, for example, as 28121809 + 1225 = 5303^2 + 35^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189947 + ... + 190094.

Almost surely, 2^28123034 is an apocalyptic number.

28123034 is a deficient number, since it is larger than the sum of its proper divisors (15201754).

28123034 is a wasteful number, since it uses less digits than its factorization.

28123034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380080.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 28123034 is about 5303.1154994022. The cubic root of 28123034 is about 304.1030136230.

The spelling of 28123034 in words is "twenty-eight million, one hundred twenty-three thousand, thirty-four".