28274342 has 4 divisors (see below), whose sum is σ = 42411516. Its totient is φ = 14137170.

The previous prime is 28274339. The next prime is 28274347. The reversal of 28274342 is 24347282.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 28274299 and 28274308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28274347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7068584 + ... + 7068587.

It is an arithmetic number, because the mean of its divisors is an integer number (10602879).

Almost surely, 2^28274342 is an apocalyptic number.

28274342 is a deficient number, since it is larger than the sum of its proper divisors (14137174).

28274342 is a wasteful number, since it uses less digits than its factorization.

28274342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14137173.

The product of its digits is 21504, while the sum is 32.

The square root of 28274342 is about 5317.3623160360. The cubic root of 28274342 is about 304.6474184242.

The spelling of 28274342 in words is "twenty-eight million, two hundred seventy-four thousand, three hundred forty-two".