28102858 has 8 divisors (see below), whose sum is σ = 48176352. Its totient is φ = 12044076.

The previous prime is 28102831. The next prime is 28102859. The reversal of 28102858 is 85820182.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (28102859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1003660 + ... + 1003687.

It is an arithmetic number, because the mean of its divisors is an integer number (6022044).

Almost surely, 2^28102858 is an apocalyptic number.

28102858 is a deficient number, since it is larger than the sum of its proper divisors (20073494).

28102858 is a wasteful number, since it uses less digits than its factorization.

28102858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007356.

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 28102858 is about 5301.2128800870. The cubic root of 28102858 is about 304.0302731279.

The spelling of 28102858 in words is "twenty-eight million, one hundred two thousand, eight hundred fifty-eight".