28334842 has 4 divisors (see below), whose sum is σ = 42502266. Its totient is φ = 14167420.

The previous prime is 28334819. The next prime is 28334849. The reversal of 28334842 is 24843382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24843382 = 2 ⋅12421691.

It can be written as a sum of positive squares in only one way, i.e., 27468081 + 866761 = 5241^2 + 931^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28334798 and 28334807.

It is not an unprimeable number, because it can be changed into a prime (28334849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7083709 + ... + 7083712.

Almost surely, 2^28334842 is an apocalyptic number.

28334842 is a deficient number, since it is larger than the sum of its proper divisors (14167424).

28334842 is a wasteful number, since it uses less digits than its factorization.

28334842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14167423.

The product of its digits is 36864, while the sum is 34.

The square root of 28334842 is about 5323.0481868944. The cubic root of 28334842 is about 304.8645533139.

The spelling of 28334842 in words is "twenty-eight million, three hundred thirty-four thousand, eight hundred forty-two".