28845687 has 8 divisors (see below), whose sum is σ = 41419504. Its totient is φ = 17751168.

The previous prime is 28845683. The next prime is 28845709. The reversal of 28845687 is 78654882.

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

It is not a de Polignac number, because 28845687 - 2² = 28845683 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 (28845683) 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, 369778 + ... + 369855.

It is an arithmetic number, because the mean of its divisors is an integer number (5177438).

Almost surely, 2^28845687 is an apocalyptic number.

28845687 is a deficient number, since it is larger than the sum of its proper divisors (12573817).

28845687 is a wasteful number, since it uses less digits than its factorization.

28845687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739649.

The product of its digits is 860160, while the sum is 48.

The square root of 28845687 is about 5370.8180941082. The cubic root of 28845687 is about 306.6857724129.

The spelling of 28845687 in words is "twenty-eight million, eight hundred forty-five thousand, six hundred eighty-seven".