207828560 has 20 divisors (see below), whose sum is σ = 483201588. Its totient is φ = 83131392.

The previous prime is 207828541. The next prime is 207828563. The reversal of 207828560 is 65828702.

It can be written as a sum of positive squares in 2 ways, for example, as 86564416 + 121264144 = 9304^2 + 11012^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207828563) 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, 1298849 + ... + 1299008.

Almost surely, 2^207828560 is an apocalyptic number.

207828560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207828560 is an abundant number, since it is smaller than the sum of its proper divisors (275373028).

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

207828560 is a wasteful number, since it uses less digits than its factorization.

207828560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2597870 (or 2597864 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 207828560 is about 14416.2602640213. The cubic root of 207828560 is about 592.3363835759.

The spelling of 207828560 in words is "two hundred seven million, eight hundred twenty-eight thousand, five hundred sixty".