28748967 has 16 divisors (see below), whose sum is σ = 41528928. Its totient is φ = 17585280.

The previous prime is 28748939. The next prime is 28748971. The reversal of 28748967 is 76984782.

It is not a de Polignac number, because 28748967 - 2⁶ = 28748903 is a prime.

It is a super-3 number, since 3×28748967³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28748917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4617 + ... + 8877.

It is an arithmetic number, because the mean of its divisors is an integer number (2595558).

Almost surely, 2^28748967 is an apocalyptic number.

28748967 is a deficient number, since it is larger than the sum of its proper divisors (12779961).

28748967 is a wasteful number, since it uses less digits than its factorization.

28748967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4450.

The product of its digits is 1354752, while the sum is 51.

The square root of 28748967 is about 5361.8063187698. The cubic root of 28748967 is about 306.3426146658.

The spelling of 28748967 in words is "twenty-eight million, seven hundred forty-eight thousand, nine hundred sixty-seven".