13440452 has 6 divisors (see below), whose sum is σ = 23520798. Its totient is φ = 6720224.

The previous prime is 13440437. The next prime is 13440461. The reversal of 13440452 is 25404431.

It can be written as a sum of positive squares in only one way, i.e., 13060996 + 379456 = 3614^2 + 616^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1680053 + ... + 1680060.

It is an arithmetic number, because the mean of its divisors is an integer number (3920133).

Almost surely, 2^13440452 is an apocalyptic number.

It is an amenable number.

13440452 is a deficient number, since it is larger than the sum of its proper divisors (10080346).

13440452 is a wasteful number, since it uses less digits than its factorization.

13440452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360117 (or 3360115 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 13440452 is about 3666.1222020004. The cubic root of 13440452 is about 237.7595434107.

Adding to 13440452 its reverse (25404431), we get a palindrome (38844883).

The spelling of 13440452 in words is "thirteen million, four hundred forty thousand, four hundred fifty-two".