13785530 has 24 divisors (see below), whose sum is σ = 27277236. Its totient is φ = 5012480.

The previous prime is 13785529. The next prime is 13785547. The reversal of 13785530 is 3558731.

It can be written as a sum of positive squares in 2 ways, for example, as 13741849 + 43681 = 3707^2 + 209^2 .

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 11 ways as a sum of consecutive naturals, for example, 4487 + ... + 6906.

Almost surely, 2^13785530 is an apocalyptic number.

13785530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13785530 is a deficient number, since it is larger than the sum of its proper divisors (13491706).

13785530 is a wasteful number, since it uses less digits than its factorization.

13785530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11422 (or 11411 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 13785530 is about 3712.8870168644. The cubic root of 13785530 is about 239.7771658531. Note that the first 3 decimals are identical.

The spelling of 13785530 in words is "thirteen million, seven hundred eighty-five thousand, five hundred thirty".