28260607 has 4 divisors (see below), whose sum is σ = 28793880. Its totient is φ = 27727336.

The previous prime is 28260599. The next prime is 28260643. The reversal of 28260607 is 70606282.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28260607 - 2³ = 28260599 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28260697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266557 + ... + 266662.

It is an arithmetic number, because the mean of its divisors is an integer number (7198470).

Almost surely, 2^28260607 is an apocalyptic number.

28260607 is a deficient number, since it is larger than the sum of its proper divisors (533273).

28260607 is an equidigital number, since it uses as much as digits as its factorization.

28260607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533272.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 28260607 is about 5316.0706353471. The cubic root of 28260607 is about 304.5980802878.

Adding to 28260607 its reverse (70606282), we get a palindrome (98866889).

The spelling of 28260607 in words is "twenty-eight million, two hundred sixty thousand, six hundred seven".