13905730 has 8 divisors (see below), whose sum is σ = 25030332. Its totient is φ = 5562288.

The previous prime is 13905713. The next prime is 13905757. The reversal of 13905730 is 3750931.

It can be written as a sum of positive squares in 2 ways, for example, as 13905441 + 289 = 3729^2 + 17^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695277 + ... + 695296.

Almost surely, 2^13905730 is an apocalyptic number.

13905730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13905730 is a deficient number, since it is larger than the sum of its proper divisors (11124602).

13905730 is a wasteful number, since it uses less digits than its factorization.

13905730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390580.

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 13905730 is about 3729.0387501339. The cubic root of 13905730 is about 240.4720454828.

The spelling of 13905730 in words is "thirteen million, nine hundred five thousand, seven hundred thirty".