28274396 has 6 divisors (see below), whose sum is σ = 49480200. Its totient is φ = 14137196.

The previous prime is 28274381. The next prime is 28274431. The reversal of 28274396 is 69347282.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3534296 + ... + 3534303.

It is an arithmetic number, because the mean of its divisors is an integer number (8246700).

Almost surely, 2^28274396 is an apocalyptic number.

It is an amenable number.

28274396 is a deficient number, since it is larger than the sum of its proper divisors (21205804).

28274396 is a wasteful number, since it uses less digits than its factorization.

28274396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7068603 (or 7068601 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 28274396 is about 5317.3673937391. The cubic root of 28274396 is about 304.6476123686.

The spelling of 28274396 in words is "twenty-eight million, two hundred seventy-four thousand, three hundred ninety-six".