28095660 has 168 divisors, whose sum is σ = 92546496. Its totient is φ = 7153920.

The previous prime is 28095659. The next prime is 28095667. The reversal of 28095660 is 6659082.

It is a super-2 number, since 2×28095660² = 1578732221671200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28095667) 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 55 ways as a sum of consecutive naturals, for example, 597757 + ... + 597803.

It is an arithmetic number, because the mean of its divisors is an integer number (550872).

Almost surely, 2^28095660 is an apocalyptic number.

28095660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28095660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46273248).

28095660 is an abundant number, since it is smaller than the sum of its proper divisors (64450836).

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

28095660 is a wasteful number, since it uses less digits than its factorization.

28095660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 28095660 is about 5300.5339353692. The cubic root of 28095660 is about 304.0043137661.

The spelling of 28095660 in words is "twenty-eight million, ninety-five thousand, six hundred sixty".