28098442 has 8 divisors (see below), whose sum is σ = 42213600. Its totient is φ = 14027244.

The previous prime is 28098409. The next prime is 28098481. The reversal of 28098442 is 24489082.

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, 9342 + ... + 11977.

It is an arithmetic number, because the mean of its divisors is an integer number (5276700).

Almost surely, 2^28098442 is an apocalyptic number.

28098442 is a deficient number, since it is larger than the sum of its proper divisors (14115158).

28098442 is a wasteful number, since it uses less digits than its factorization.

28098442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21980.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 28098442 is about 5300.7963552659. The cubic root of 28098442 is about 304.0143474877.

The spelling of 28098442 in words is "twenty-eight million, ninety-eight thousand, four hundred forty-two".