28989267 has 16 divisors (see below), whose sum is σ = 41880960. Its totient is φ = 17764992.

The previous prime is 28989227. The next prime is 28989293. The reversal of 28989267 is 76298982.

It is a happy number.

It is not a de Polignac number, because 28989267 - 2⁸ = 28989011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (28989217) 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, 4417 + ... + 8802.

It is an arithmetic number, because the mean of its divisors is an integer number (2617560).

Almost surely, 2^28989267 is an apocalyptic number.

28989267 is a deficient number, since it is larger than the sum of its proper divisors (12891693).

28989267 is a wasteful number, since it uses less digits than its factorization.

28989267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13282.

The product of its digits is 870912, while the sum is 51.

The square root of 28989267 is about 5384.1681808799. The cubic root of 28989267 is about 307.1937753900.

The spelling of 28989267 in words is "twenty-eight million, nine hundred eighty-nine thousand, two hundred sixty-seven".