28130607 has 12 divisors (see below), whose sum is σ = 40704664. Its totient is φ = 18720720.

The previous prime is 28130603. The next prime is 28130647. The reversal of 28130607 is 70603182.

28130607 is a `hidden beast` number, since 28 + 1 + 30 + 607 = 666.

It is not a de Polignac number, because 28130607 - 2² = 28130603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28130603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3357 + ... + 8217.

Almost surely, 2^28130607 is an apocalyptic number.

28130607 is a deficient number, since it is larger than the sum of its proper divisors (12574057).

28130607 is a wasteful number, since it uses less digits than its factorization.

28130607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510 (or 5507 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 28130607 is about 5303.8294655843. The cubic root of 28130607 is about 304.1303075657.

Adding to 28130607 its reverse (70603182), we get a palindrome (98733789).

The spelling of 28130607 in words is "twenty-eight million, one hundred thirty thousand, six hundred seven".