28047298 has 4 divisors (see below), whose sum is σ = 42070950. Its totient is φ = 14023648.

The previous prime is 28047269. The next prime is 28047301. The reversal of 28047298 is 89274082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89274082 = 2 ⋅44637041.

It can be written as a sum of positive squares in only one way, i.e., 25877569 + 2169729 = 5087^2 + 1473^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28047298.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7011823 + ... + 7011826.

Almost surely, 2^28047298 is an apocalyptic number.

28047298 is a deficient number, since it is larger than the sum of its proper divisors (14023652).

28047298 is a wasteful number, since it uses less digits than its factorization.

28047298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14023651.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 28047298 is about 5295.9699772563. The cubic root of 28047298 is about 303.8297826520.

The spelling of 28047298 in words is "twenty-eight million, forty-seven thousand, two hundred ninety-eight".