28983567 has 4 divisors (see below), whose sum is σ = 38644760. Its totient is φ = 19322376.

The previous prime is 28983551. The next prime is 28983571. The reversal of 28983567 is 76538982.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28983567 - 2⁴ = 28983551 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 (28983547) 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, 4830592 + ... + 4830597.

It is an arithmetic number, because the mean of its divisors is an integer number (9661190).

Almost surely, 2^28983567 is an apocalyptic number.

28983567 is a deficient number, since it is larger than the sum of its proper divisors (9661193).

28983567 is an equidigital number, since it uses as much as digits as its factorization.

28983567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9661192.

The product of its digits is 725760, while the sum is 48.

The square root of 28983567 is about 5383.6388251813. The cubic root of 28983567 is about 307.1736401298.

The spelling of 28983567 in words is "twenty-eight million, nine hundred eighty-three thousand, five hundred sixty-seven".