28421126 has 16 divisors (see below), whose sum is σ = 43778880. Its totient is φ = 13833000.

The previous prime is 28421117. The next prime is 28421149. The reversal of 28421126 is 62112482.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28421095 and 28421104.

It is a congruent number.

It is an unprimeable number.

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, 11501 + ... + 13751.

It is an arithmetic number, because the mean of its divisors is an integer number (2736180).

Almost surely, 2^28421126 is an apocalyptic number.

28421126 is a deficient number, since it is larger than the sum of its proper divisors (15357754).

28421126 is a wasteful number, since it uses less digits than its factorization.

28421126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419.

The product of its digits is 1536, while the sum is 26.

The square root of 28421126 is about 5331.1467809469. The cubic root of 28421126 is about 305.1736930570.

The spelling of 28421126 in words is "twenty-eight million, four hundred twenty-one thousand, one hundred twenty-six".