28446842 has 4 divisors (see below), whose sum is σ = 42670266. Its totient is φ = 14223420.

The previous prime is 28446833. The next prime is 28446893. The reversal of 28446842 is 24864482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24864482 = 2 ⋅12432241.

It can be written as a sum of positive squares in only one way, i.e., 25210441 + 3236401 = 5021^2 + 1799^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28446796 and 28446805.

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 as a sum of consecutive naturals, namely, 7111709 + ... + 7111712.

Almost surely, 2^28446842 is an apocalyptic number.

28446842 is a deficient number, since it is larger than the sum of its proper divisors (14223424).

28446842 is a wasteful number, since it uses less digits than its factorization.

28446842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14223423.

The product of its digits is 98304, while the sum is 38.

The square root of 28446842 is about 5333.5580994304. The cubic root of 28446842 is about 305.2657077191.

The spelling of 28446842 in words is "twenty-eight million, four hundred forty-six thousand, eight hundred forty-two".