28361855 has 8 divisors (see below), whose sum is σ = 35208000. Its totient is φ = 21906976.

The previous prime is 28361849. The next prime is 28361857. The reversal of 28361855 is 55816382.

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 28361855 - 2¹⁰ = 28360831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28361857) 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, 97655 + ... + 97944.

It is an arithmetic number, because the mean of its divisors is an integer number (4401000).

Almost surely, 2^28361855 is an apocalyptic number.

28361855 is a deficient number, since it is larger than the sum of its proper divisors (6846145).

28361855 is a wasteful number, since it uses less digits than its factorization.

28361855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195633.

The product of its digits is 57600, while the sum is 38.

The square root of 28361855 is about 5325.5849443981. The cubic root of 28361855 is about 304.9614033395.

The spelling of 28361855 in words is "twenty-eight million, three hundred sixty-one thousand, eight hundred fifty-five".