13215452 has 12 divisors (see below), whose sum is σ = 23157456. Its totient is φ = 6599040.

The previous prime is 13215439. The next prime is 13215457. The reversal of 13215452 is 25451231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13215457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2252 + ... + 5612.

It is an arithmetic number, because the mean of its divisors is an integer number (1929788).

Almost surely, 2^13215452 is an apocalyptic number.

It is an amenable number.

13215452 is a deficient number, since it is larger than the sum of its proper divisors (9942004).

13215452 is a wasteful number, since it uses less digits than its factorization.

13215452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4348 (or 4346 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 13215452 is about 3635.3063144665. The cubic root of 13215452 is about 236.4253318060.

Adding to 13215452 its reverse (25451231), we get a palindrome (38666683).

The spelling of 13215452 in words is "thirteen million, two hundred fifteen thousand, four hundred fifty-two".