28346685 has 16 divisors (see below), whose sum is σ = 45541440. Its totient is φ = 15056000.

The previous prime is 28346663. The next prime is 28346707. The reversal of 28346685 is 58664382.

28346685 is a nontrivial binomial coefficient, being equal to C(7530, 2).

It is an interprime number because it is at equal distance from previous prime (28346663) and next prime (28346707).

It is not a de Polignac number, because 28346685 - 2²¹ = 26249533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1 + ... + 7529.

It is an arithmetic number, because the mean of its divisors is an integer number (2846340).

Almost surely, 2^28346685 is an apocalyptic number.

28346685 is the 7529-th triangular number and also the 3765-th hexagonal number.

It is an amenable number.

28346685 is a deficient number, since it is larger than the sum of its proper divisors (17194755).

28346685 is a wasteful number, since it uses less digits than its factorization.

28346685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7788.

The product of its digits is 276480, while the sum is 42.

The square root of 28346685 is about 5324.1604972052. The cubic root of 28346685 is about 304.9070217349.

The spelling of 28346685 in words is "twenty-eight million, three hundred forty-six thousand, six hundred eighty-five".