13427240 has 16 divisors (see below), whose sum is σ = 30211380. Its totient is φ = 5370880.

The previous prime is 13427231. The next prime is 13427251. The reversal of 13427240 is 4272431.

It can be written as a sum of positive squares in 2 ways, for example, as 12945604 + 481636 = 3598^2 + 694^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167801 + ... + 167880.

Almost surely, 2^13427240 is an apocalyptic number.

13427240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13427240 is an abundant number, since it is smaller than the sum of its proper divisors (16784140).

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

13427240 is a wasteful number, since it uses less digits than its factorization.

13427240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335692 (or 335688 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 13427240 is about 3664.3198550345. The cubic root of 13427240 is about 237.6816117820.

Adding to 13427240 its reverse (4272431), we get a palindrome (17699671).

The spelling of 13427240 in words is "thirteen million, four hundred twenty-seven thousand, two hundred forty".