13440052 has 6 divisors (see below), whose sum is σ = 23520098. Its totient is φ = 6720024.

The previous prime is 13440043. The next prime is 13440059. The reversal of 13440052 is 25004431.

It can be written as a sum of positive squares in only one way, i.e., 8259876 + 5180176 = 2874^2 + 2276^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13440059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1680003 + ... + 1680010.

Almost surely, 2^13440052 is an apocalyptic number.

It is an amenable number.

13440052 is a deficient number, since it is larger than the sum of its proper divisors (10080046).

13440052 is a wasteful number, since it uses less digits than its factorization.

13440052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360017 (or 3360015 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 13440052 is about 3666.0676480392. The cubic root of 13440052 is about 237.7571847410.

Adding to 13440052 its reverse (25004431), we get a palindrome (38444483).

It can be divided in two parts, 134 and 40052, that added together give a triangular number (40186 = T₂₈₃).

The spelling of 13440052 in words is "thirteen million, four hundred forty thousand, fifty-two".