28456142 has 16 divisors (see below), whose sum is σ = 50146992. Its totient is φ = 11939520.

The previous prime is 28456123. The next prime is 28456159. The reversal of 28456142 is 24165482.

It is a junction number, because it is equal to n+sod(n) for n = 28456099 and 28456108.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 49463 + ... + 50034.

It is an arithmetic number, because the mean of its divisors is an integer number (3134187).

Almost surely, 2^28456142 is an apocalyptic number.

28456142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28456142 is a deficient number, since it is larger than the sum of its proper divisors (21690850).

28456142 is a wasteful number, since it uses less digits than its factorization.

28456142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99523.

The product of its digits is 15360, while the sum is 32.

The square root of 28456142 is about 5334.4298664431. The cubic root of 28456142 is about 305.2989704829.

The spelling of 28456142 in words is "twenty-eight million, four hundred fifty-six thousand, one hundred forty-two".