13440552 has 16 divisors (see below), whose sum is σ = 33601440. Its totient is φ = 4480176.

The previous prime is 13440551. The next prime is 13440563. The reversal of 13440552 is 25504431.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 560023 = 13440552 / (1 + 3 + 4 + 4 + 0 + 5 + 5 + 2).

It is not an unprimeable number, because it can be changed into a prime (13440551) 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, 279988 + ... + 280035.

It is an arithmetic number, because the mean of its divisors is an integer number (2100090).

Almost surely, 2^13440552 is an apocalyptic number.

13440552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13440552 is an abundant number, since it is smaller than the sum of its proper divisors (20160888).

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

13440552 is a wasteful number, since it uses less digits than its factorization.

13440552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560032 (or 560028 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 13440552 is about 3666.1358403638. The cubic root of 13440552 is about 237.7601330708.

Adding to 13440552 its reverse (25504431), we get a palindrome (38944983).

The spelling of 13440552 in words is "thirteen million, four hundred forty thousand, five hundred fifty-two".