13698730 has 16 divisors (see below), whose sum is σ = 25508520. Its totient is φ = 5290432.

The previous prime is 13698703. The next prime is 13698733. The reversal of 13698730 is 3789631.

It can be written as a sum of positive squares in 4 ways, for example, as 6713281 + 6985449 = 2591^2 + 2643^2 .

It is a super-2 number, since 2×13698730² = 375310407225800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13698730.

It is not an unprimeable number, because it can be changed into a prime (13698733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23329 + ... + 23908.

Almost surely, 2^13698730 is an apocalyptic number.

13698730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13698730 is a deficient number, since it is larger than the sum of its proper divisors (11809790).

13698730 is a wasteful number, since it uses less digits than its factorization.

13698730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47273.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 13698730 is about 3701.1795417137. The cubic root of 13698730 is about 239.2728570249.

Subtracting from 13698730 its reverse (3789631), we obtain a palindrome (9909099).

The spelling of 13698730 in words is "thirteen million, six hundred ninety-eight thousand, seven hundred thirty".