13440148 has 6 divisors (see below), whose sum is σ = 23520266. Its totient is φ = 6720072.

The previous prime is 13440121. The next prime is 13440173. The reversal of 13440148 is 84104431.

It can be written as a sum of positive squares in only one way, i.e., 9229444 + 4210704 = 3038^2 + 2052^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1680015 + ... + 1680022.

Almost surely, 2^13440148 is an apocalyptic number.

It is an amenable number.

13440148 is a deficient number, since it is larger than the sum of its proper divisors (10080118).

13440148 is a wasteful number, since it uses less digits than its factorization.

13440148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360041 (or 3360039 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 13440148 is about 3666.0807410639. The cubic root of 13440148 is about 237.7577508260.

Adding to 13440148 its reverse (84104431), we get a palindrome (97544579).

The spelling of 13440148 in words is "thirteen million, four hundred forty thousand, one hundred forty-eight".