28945567 has 8 divisors (see below), whose sum is σ = 34221600. Its totient is φ = 23954784.

The previous prime is 28945513. The next prime is 28945573. The reversal of 28945567 is 76554982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28945567 - 2⁷ = 28945439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28945597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71092 + ... + 71497.

It is an arithmetic number, because the mean of its divisors is an integer number (4277700).

Almost surely, 2^28945567 is an apocalyptic number.

28945567 is a deficient number, since it is larger than the sum of its proper divisors (5276033).

28945567 is a wasteful number, since it uses less digits than its factorization.

28945567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142625.

The product of its digits is 604800, while the sum is 46.

The square root of 28945567 is about 5380.1084561559. The cubic root of 28945567 is about 307.0393375517.

The spelling of 28945567 in words is "twenty-eight million, nine hundred forty-five thousand, five hundred sixty-seven".