28605685704 has 16 divisors (see below), whose sum is σ = 71514214320. Its totient is φ = 9535228560.

The previous prime is 28605685607. The next prime is 28605685709. The reversal of 28605685704 is 40758650682.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28605685709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595951762 + ... + 595951809.

It is an arithmetic number, because the mean of its divisors is an integer number (4469638395).

Almost surely, 2^28605685704 is an apocalyptic number.

28605685704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28605685704 is an abundant number, since it is smaller than the sum of its proper divisors (42908528616).

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

28605685704 is a wasteful number, since it uses less digits than its factorization.

28605685704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191903580 (or 1191903576 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 28605685704 in words is "twenty-eight billion, six hundred five million, six hundred eighty-five thousand, seven hundred four".