28988467 has 4 divisors (see below), whose sum is σ = 28999960. Its totient is φ = 28976976.

The previous prime is 28988461. The next prime is 28988473. The reversal of 28988467 is 76488982.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (28988461) and next prime (28988473).

It is a cyclic number.

It is not a de Polignac number, because 28988467 - 2³ = 28988459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28988461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138 + ... + 7615.

It is an arithmetic number, because the mean of its divisors is an integer number (7249990).

Almost surely, 2^28988467 is an apocalyptic number.

28988467 is a deficient number, since it is larger than the sum of its proper divisors (11493).

28988467 is an equidigital number, since it uses as much as digits as its factorization.

28988467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11492.

The product of its digits is 1548288, while the sum is 52.

The square root of 28988467 is about 5384.0938884830. The cubic root of 28988467 is about 307.1909495478.

The spelling of 28988467 in words is "twenty-eight million, nine hundred eighty-eight thousand, four hundred sixty-seven".