28488367 has 4 divisors (see below), whose sum is σ = 28633176. Its totient is φ = 28343560.

The previous prime is 28488359. The next prime is 28488371. The reversal of 28488367 is 76388482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76388482 = 2 ⋅38194241.

It is a cyclic number.

It is not a de Polignac number, because 28488367 - 2³ = 28488359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28488337) 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, 72109 + ... + 72502.

It is an arithmetic number, because the mean of its divisors is an integer number (7158294).

Almost surely, 2^28488367 is an apocalyptic number.

28488367 is a deficient number, since it is larger than the sum of its proper divisors (144809).

28488367 is a wasteful number, since it uses less digits than its factorization.

28488367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144808.

The product of its digits is 516096, while the sum is 46.

The square root of 28488367 is about 5337.4494845385. The cubic root of 28488367 is about 305.4141717155.

The spelling of 28488367 in words is "twenty-eight million, four hundred eighty-eight thousand, three hundred sixty-seven".