28118426 has 32 divisors (see below), whose sum is σ = 50552832. Its totient is φ = 11476080.

The previous prime is 28118411. The next prime is 28118471. The reversal of 28118426 is 62481182.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28118392 and 28118401.

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 15 ways as a sum of consecutive naturals, for example, 28595 + ... + 29561.

It is an arithmetic number, because the mean of its divisors is an integer number (1579776).

Almost surely, 2^28118426 is an apocalyptic number.

28118426 is a deficient number, since it is larger than the sum of its proper divisors (22434406).

28118426 is a wasteful number, since it uses less digits than its factorization.

28118426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074.

The product of its digits is 6144, while the sum is 32.

The square root of 28118426 is about 5302.6810200124. The cubic root of 28118426 is about 304.0864034755.

The spelling of 28118426 in words is "twenty-eight million, one hundred eighteen thousand, four hundred twenty-six".