28006298 has 4 divisors (see below), whose sum is σ = 42009450. Its totient is φ = 14003148.

The previous prime is 28006291. The next prime is 28006309. The reversal of 28006298 is 89260082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89260082 = 2 ⋅44630041.

It can be written as a sum of positive squares in only one way, i.e., 27071209 + 935089 = 5203^2 + 967^2 .

It is not an unprimeable number, because it can be changed into a prime (28006291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7001573 + ... + 7001576.

Almost surely, 2^28006298 is an apocalyptic number.

28006298 is a deficient number, since it is larger than the sum of its proper divisors (14003152).

28006298 is a wasteful number, since it uses less digits than its factorization.

28006298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14003151.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 28006298 is about 5292.0976937317. The cubic root of 28006298 is about 303.6816626681.

The spelling of 28006298 in words is "twenty-eight million, six thousand, two hundred ninety-eight".