28442698 has 8 divisors (see below), whose sum is σ = 43248708. Its totient is φ = 14026464.

The previous prime is 28442681. The next prime is 28442719. The reversal of 28442698 is 89624482.

It can be written as a sum of positive squares in 2 ways, for example, as 26183689 + 2259009 = 5117^2 + 1503^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97261 + ... + 97552.

Almost surely, 2^28442698 is an apocalyptic number.

28442698 is a deficient number, since it is larger than the sum of its proper divisors (14806010).

28442698 is a wasteful number, since it uses less digits than its factorization.

28442698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194888.

The product of its digits is 221184, while the sum is 43.

The square root of 28442698 is about 5333.1696016534. The cubic root of 28442698 is about 305.2508837827.

The spelling of 28442698 in words is "twenty-eight million, four hundred forty-two thousand, six hundred ninety-eight".