28366560 has 72 divisors (see below), whose sum is σ = 96805800. Its totient is φ = 7564032.

The previous prime is 28366517. The next prime is 28366573. The reversal of 28366560 is 6566382.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8410 + ... + 11289.

It is an arithmetic number, because the mean of its divisors is an integer number (1344525).

Almost surely, 2^28366560 is an apocalyptic number.

28366560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28366560 is an abundant number, since it is smaller than the sum of its proper divisors (68439240).

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

28366560 is a wasteful number, since it uses less digits than its factorization.

28366560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19720 (or 19709 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 28366560 is about 5326.0266615930. The cubic root of 28366560 is about 304.9782659421.

The spelling of 28366560 in words is "twenty-eight million, three hundred sixty-six thousand, five hundred sixty".