13215532 has 24 divisors (see below), whose sum is σ = 26102160. Its totient is φ = 5799360.

The previous prime is 13215479. The next prime is 13215533. The reversal of 13215532 is 23551231.

13215532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (13215533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3903 + ... + 6454.

It is an arithmetic number, because the mean of its divisors is an integer number (1087590).

Almost surely, 2^13215532 is an apocalyptic number.

It is an amenable number.

13215532 is a deficient number, since it is larger than the sum of its proper divisors (12886628).

13215532 is a wasteful number, since it uses less digits than its factorization.

13215532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10401 (or 10399 counting only the distinct ones).

The product of its digits is 900, while the sum is 22.

The square root of 13215532 is about 3635.3173176492. The cubic root of 13215532 is about 236.4258088735.

Adding to 13215532 its reverse (23551231), we get a palindrome (36766763).

The spelling of 13215532 in words is "thirteen million, two hundred fifteen thousand, five hundred thirty-two".