28340676 has 144 divisors (see below), whose sum is σ = 90749568. Its totient is φ = 7257600.

The previous prime is 28340659. The next prime is 28340677. The reversal of 28340676 is 67604382.

It is a super-2 number, since 2×28340676² = 1606387832273952, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28340676.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28340677) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 134211 + ... + 134421.

Almost surely, 2^28340676 is an apocalyptic number.

28340676 is a gapful number since it is divisible by the number (26) 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 28340676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45374784).

28340676 is an abundant number, since it is smaller than the sum of its proper divisors (62408892).

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

28340676 is a wasteful number, since it uses less digits than its factorization.

28340676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 28340676 is about 5323.5961529778. The cubic root of 28340676 is about 304.8854752322.

The spelling of 28340676 in words is "twenty-eight million, three hundred forty thousand, six hundred seventy-six".