13423040 has 28 divisors (see below), whose sum is σ = 31964376. Its totient is φ = 5369088.

The previous prime is 13423019. The next prime is 13423051. The reversal of 13423040 is 4032431.

It is a congruent number.

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, 20654 + ... + 21293.

Almost surely, 2^13423040 is an apocalyptic number.

13423040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13423040 is an abundant number, since it is smaller than the sum of its proper divisors (18541336).

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

13423040 is an equidigital number, since it uses as much as digits as its factorization.

13423040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41964 (or 41954 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 13423040 is about 3663.7467161364. The cubic root of 13423040 is about 237.6568271682.

Adding to 13423040 its reverse (4032431), we get a palindrome (17455471).

The spelling of 13423040 in words is "thirteen million, four hundred twenty-three thousand, forty".