28725067 has 4 divisors (see below), whose sum is σ = 32828656. Its totient is φ = 24621480.

The previous prime is 28725049. The next prime is 28725071. The reversal of 28725067 is 76052782.

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 28725067 - 2¹⁹ = 28200779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28726067) 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, 2051784 + ... + 2051797.

It is an arithmetic number, because the mean of its divisors is an integer number (8207164).

Almost surely, 2^28725067 is an apocalyptic number.

28725067 is a deficient number, since it is larger than the sum of its proper divisors (4103589).

28725067 is an equidigital number, since it uses as much as digits as its factorization.

28725067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103588.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 28725067 is about 5359.5771288414. The cubic root of 28725067 is about 306.2577000979.

The spelling of 28725067 in words is "twenty-eight million, seven hundred twenty-five thousand, sixty-seven".