28391126 has 16 divisors (see below), whose sum is σ = 43240704. Its totient is φ = 13979304.

The previous prime is 28391123. The next prime is 28391141. The reversal of 28391126 is 62119382.

It is a junction number, because it is equal to n+sod(n) for n = 28391092 and 28391101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28391123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58055 + ... + 58541.

It is an arithmetic number, because the mean of its divisors is an integer number (2702544).

Almost surely, 2^28391126 is an apocalyptic number.

28391126 is a deficient number, since it is larger than the sum of its proper divisors (14849578).

28391126 is a wasteful number, since it uses less digits than its factorization.

28391126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875.

The product of its digits is 5184, while the sum is 32.

The square root of 28391126 is about 5328.3323845271. The cubic root of 28391126 is about 305.0662796027.

The spelling of 28391126 in words is "twenty-eight million, three hundred ninety-one thousand, one hundred twenty-six".