28865455 has 8 divisors (see below), whose sum is σ = 35226000. Its totient is φ = 22700736.

The previous prime is 28865453. The next prime is 28865467. The reversal of 28865455 is 55456882.

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 28865455 - 2¹ = 28865453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28865453) 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, 48630 + ... + 49219.

It is an arithmetic number, because the mean of its divisors is an integer number (4403250).

Almost surely, 2^28865455 is an apocalyptic number.

28865455 is a deficient number, since it is larger than the sum of its proper divisors (6360545).

28865455 is an equidigital number, since it uses as much as digits as its factorization.

28865455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97913.

The product of its digits is 384000, while the sum is 43.

The square root of 28865455 is about 5372.6580944631. The cubic root of 28865455 is about 306.7558138484.

The spelling of 28865455 in words is "twenty-eight million, eight hundred sixty-five thousand, four hundred fifty-five".