28565415 has 24 divisors (see below), whose sum is σ = 51113088. Its totient is φ = 14742720.

The previous prime is 28565413. The next prime is 28565419. The reversal of 28565415 is 51456582.

It is not a de Polignac number, because 28565415 - 2¹ = 28565413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28565415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28565413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8844 + ... + 11633.

It is an arithmetic number, because the mean of its divisors is an integer number (2129712).

Almost surely, 2^28565415 is an apocalyptic number.

28565415 is a deficient number, since it is larger than the sum of its proper divisors (22547673).

28565415 is a wasteful number, since it uses less digits than its factorization.

28565415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20519 (or 20516 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 28565415 is about 5344.6622905475. The cubic root of 28565415 is about 305.6892590741.

The spelling of 28565415 in words is "twenty-eight million, five hundred sixty-five thousand, four hundred fifteen".