28134207 has 6 divisors (see below), whose sum is σ = 40638312. Its totient is φ = 18756132.

The previous prime is 28134181. The next prime is 28134217. The reversal of 28134207 is 70243182.

It is not a de Polignac number, because 28134207 - 2⁸ = 28133951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28134217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1563003 + ... + 1563020.

It is an arithmetic number, because the mean of its divisors is an integer number (6773052).

Almost surely, 2^28134207 is an apocalyptic number.

28134207 is a deficient number, since it is larger than the sum of its proper divisors (12504105).

28134207 is a wasteful number, since it uses less digits than its factorization.

28134207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3126029 (or 3126026 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 28134207 is about 5304.1688321546. The cubic root of 28134207 is about 304.1432806523.

Adding to 28134207 its reverse (70243182), we get a palindrome (98377389).

The spelling of 28134207 in words is "twenty-eight million, one hundred thirty-four thousand, two hundred seven".