28283660 has 24 divisors (see below), whose sum is σ = 60661440. Its totient is φ = 11072384.

The previous prime is 28283657. The next prime is 28283663. The reversal of 28283660 is 6638282.

It is an interprime number because it is at equal distance from previous prime (28283657) and next prime (28283663).

It is a self number, because there is not a number n which added to its sum of digits gives 28283660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28283663) 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 7 ways as a sum of consecutive naturals, for example, 14105 + ... + 15984.

It is an arithmetic number, because the mean of its divisors is an integer number (2527560).

Almost surely, 2^28283660 is an apocalyptic number.

28283660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28283660 is an abundant number, since it is smaller than the sum of its proper divisors (32377780).

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

28283660 is a wasteful number, since it uses less digits than its factorization.

28283660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30145 (or 30143 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 28283660 is about 5318.2384301571. The cubic root of 28283660 is about 304.6808809520.

The spelling of 28283660 in words is "twenty-eight million, two hundred eighty-three thousand, six hundred sixty".