28102845 has 8 divisors (see below), whose sum is σ = 44964576. Its totient is φ = 14988176.

The previous prime is 28102831. The next prime is 28102859. The reversal of 28102845 is 54820182.

It is an interprime number because it is at equal distance from previous prime (28102831) and next prime (28102859).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28102845 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936747 + ... + 936776.

It is an arithmetic number, because the mean of its divisors is an integer number (5620572).

Almost surely, 2^28102845 is an apocalyptic number.

It is an amenable number.

28102845 is a deficient number, since it is larger than the sum of its proper divisors (16861731).

28102845 is a wasteful number, since it uses less digits than its factorization.

28102845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873531.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 28102845 is about 5301.2116539523. The cubic root of 28102845 is about 304.0302262478.

The spelling of 28102845 in words is "twenty-eight million, one hundred two thousand, eight hundred forty-five".