28261170 has 128 divisors (see below), whose sum is σ = 90777600. Its totient is φ = 6111936.

The previous prime is 28261169. The next prime is 28261171. The reversal of 28261170 is 7116282.

It is an interprime number because it is at equal distance from previous prime (28261169) and next prime (28261171).

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

It is not an unprimeable number, because it can be changed into a prime (28261171) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35517 + ... + 36303.

It is an arithmetic number, because the mean of its divisors is an integer number (709200).

Almost surely, 2^28261170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28261170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45388800).

28261170 is an abundant number, since it is smaller than the sum of its proper divisors (62516430).

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

28261170 is a wasteful number, since it uses less digits than its factorization.

28261170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 28261170 is about 5316.1235877282. The cubic root of 28261170 is about 304.6001029806.

The spelling of 28261170 in words is "twenty-eight million, two hundred sixty-one thousand, one hundred seventy".