28693560 has 64 divisors (see below), whose sum is σ = 98380800. Its totient is φ = 6558336.

The previous prime is 28693517. The next prime is 28693571. The reversal of 28693560 is 6539682.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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 15 ways as a sum of consecutive naturals, for example, 16240 + ... + 17919.

It is an arithmetic number, because the mean of its divisors is an integer number (1537200).

Almost surely, 2^28693560 is an apocalyptic number.

28693560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28693560 is an abundant number, since it is smaller than the sum of its proper divisors (69687240).

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

28693560 is a wasteful number, since it uses less digits than its factorization.

28693560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34180 (or 34176 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 28693560 is about 5356.6370046887. The cubic root of 28693560 is about 306.1456865335.

The spelling of 28693560 in words is "twenty-eight million, six hundred ninety-three thousand, five hundred sixty".