28002680 has 16 divisors (see below), whose sum is σ = 63006120. Its totient is φ = 11201056.

The previous prime is 28002671. The next prime is 28002743. The reversal of 28002680 is 8620082.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 349994 + ... + 350073.

Almost surely, 2^28002680 is an apocalyptic number.

28002680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28002680 is an abundant number, since it is smaller than the sum of its proper divisors (35003440).

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

28002680 is a wasteful number, since it uses less digits than its factorization.

28002680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700078 (or 700074 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 28002680 is about 5291.7558522668. The cubic root of 28002680 is about 303.6685850433.

It can be divided in two parts, 28002 and 680, that added together give a palindrome (28682).

The spelling of 28002680 in words is "twenty-eight million, two thousand, six hundred eighty".