28083340 has 24 divisors (see below), whose sum is σ = 59808672. Its totient is φ = 11074560.

The previous prime is 28083329. The next prime is 28083361. The reversal of 28083340 is 4338082.

It is a junction number, because it is equal to n+sod(n) for n = 28083299 and 28083308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8469 + ... + 11308.

It is an arithmetic number, because the mean of its divisors is an integer number (2492028).

Almost surely, 2^28083340 is an apocalyptic number.

28083340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28083340 is an abundant number, since it is smaller than the sum of its proper divisors (31725332).

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

28083340 is a wasteful number, since it uses less digits than its factorization.

28083340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19857 (or 19855 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 28083340 is about 5299.3716608670. The cubic root of 28083340 is about 303.9598717808.

The spelling of 28083340 in words is "twenty-eight million, eighty-three thousand, three hundred forty".