28677571 has 8 divisors (see below), whose sum is σ = 30935520. Its totient is φ = 26427072.

The previous prime is 28677563. The next prime is 28677581. The reversal of 28677571 is 17577682.

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

It is a cyclic number.

It is not a de Polignac number, because 28677571 - 2³ = 28677563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28677581) 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, 8175 + ... + 11143.

It is an arithmetic number, because the mean of its divisors is an integer number (3866940).

Almost surely, 2^28677571 is an apocalyptic number.

28677571 is a deficient number, since it is larger than the sum of its proper divisors (2257949).

28677571 is a wasteful number, since it uses less digits than its factorization.

28677571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3725.

The product of its digits is 164640, while the sum is 43.

The square root of 28677571 is about 5355.1443491282. The cubic root of 28677571 is about 306.0888111362.

The spelling of 28677571 in words is "twenty-eight million, six hundred seventy-seven thousand, five hundred seventy-one".