13243404 has 12 divisors (see below), whose sum is σ = 30901304. Its totient is φ = 4414464.

The previous prime is 13243393. The next prime is 13243409. The reversal of 13243404 is 40434231.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (13243409) 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, 551797 + ... + 551820.

Almost surely, 2^13243404 is an apocalyptic number.

It is an amenable number.

13243404 is an abundant number, since it is smaller than the sum of its proper divisors (17657900).

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

13243404 is a wasteful number, since it uses less digits than its factorization.

13243404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103624 (or 1103622 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 13243404 is about 3639.1488015743. The cubic root of 13243404 is about 236.5919021482.

Adding to 13243404 its reverse (40434231), we get a palindrome (53677635).

The spelling of 13243404 in words is "thirteen million, two hundred forty-three thousand, four hundred four".