28361610 has 128 divisors (see below), whose sum is σ = 82736640. Its totient is φ = 6884352.

The previous prime is 28361587. The next prime is 28361629. The reversal of 28361610 is 1616382.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 169747 + ... + 169913.

It is an arithmetic number, because the mean of its divisors is an integer number (646380).

Almost surely, 2^28361610 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28361610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41368320).

28361610 is an abundant number, since it is smaller than the sum of its proper divisors (54375030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28361610 is a wasteful number, since it uses less digits than its factorization.

28361610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28361610 is about 5325.5619421804. The cubic root of 28361610 is about 304.9605252146.

Adding to 28361610 its reverse (1616382), we get a palindrome (29977992).

The spelling of 28361610 in words is "twenty-eight million, three hundred sixty-one thousand, six hundred ten".