28616610 has 64 divisors (see below), whose sum is σ = 79346304. Its totient is φ = 6528000.

The previous prime is 28616587. The next prime is 28616617. The reversal of 28616610 is 1661682.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28616617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3060 + ... + 8160.

It is an arithmetic number, because the mean of its divisors is an integer number (1239786).

Almost surely, 2^28616610 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28616610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39673152).

28616610 is an abundant number, since it is smaller than the sum of its proper divisors (50729694).

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

28616610 is a wasteful number, since it uses less digits than its factorization.

28616610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5139.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 28616610 is about 5349.4495043883. The cubic root of 28616610 is about 305.8717690749.

The spelling of 28616610 in words is "twenty-eight million, six hundred sixteen thousand, six hundred ten".