28660245 has 8 divisors (see below), whose sum is σ = 45856416. Its totient is φ = 15285456.

The previous prime is 28660243. The next prime is 28660279. The reversal of 28660245 is 54206682.

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

It is not a de Polignac number, because 28660245 - 2¹ = 28660243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28660241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955327 + ... + 955356.

It is an arithmetic number, because the mean of its divisors is an integer number (5732052).

Almost surely, 2^28660245 is an apocalyptic number.

It is an amenable number.

28660245 is a deficient number, since it is larger than the sum of its proper divisors (17196171).

28660245 is a wasteful number, since it uses less digits than its factorization.

28660245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910691.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 28660245 is about 5353.5264078923. The cubic root of 28660245 is about 306.0271559479.

The spelling of 28660245 in words is "twenty-eight million, six hundred sixty thousand, two hundred forty-five".