13387930 has 8 divisors (see below), whose sum is σ = 24098292. Its totient is φ = 5355168.

The previous prime is 13387919. The next prime is 13387931. The reversal of 13387930 is 3978331.

It can be written as a sum of positive squares in 2 ways, for example, as 12131289 + 1256641 = 3483^2 + 1121^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13387931) 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, 669387 + ... + 669406.

Almost surely, 2^13387930 is an apocalyptic number.

13387930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13387930 is a deficient number, since it is larger than the sum of its proper divisors (10710362).

13387930 is a wasteful number, since it uses less digits than its factorization.

13387930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338800.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 13387930 is about 3658.9520357611. The cubic root of 13387930 is about 237.4494370662.

The spelling of 13387930 in words is "thirteen million, three hundred eighty-seven thousand, nine hundred thirty".