28102534 has 8 divisors (see below), whose sum is σ = 42185520. Its totient is φ = 14040696.

The previous prime is 28102519. The next prime is 28102541. The reversal of 28102534 is 43520182.

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

It is a junction number, because it is equal to n+sod(n) for n = 28102499 and 28102508.

It is a congruent number.

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, 1389 + ... + 7624.

It is an arithmetic number, because the mean of its divisors is an integer number (5273190).

Almost surely, 2^28102534 is an apocalyptic number.

28102534 is a deficient number, since it is larger than the sum of its proper divisors (14082986).

28102534 is a wasteful number, since it uses less digits than its factorization.

28102534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10574.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 28102534 is about 5301.1823209544. The cubic root of 28102534 is about 304.0291047273.

The spelling of 28102534 in words is "twenty-eight million, one hundred two thousand, five hundred thirty-four".