13212424 has 8 divisors (see below), whose sum is σ = 24773310. Its totient is φ = 6606208.

The previous prime is 13212413. The next prime is 13212427. The reversal of 13212424 is 42421231.

It can be written as a sum of positive squares in only one way, i.e., 13089924 + 122500 = 3618^2 + 350^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13212427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825769 + ... + 825784.

Almost surely, 2^13212424 is an apocalyptic number.

It is an amenable number.

13212424 is a deficient number, since it is larger than the sum of its proper divisors (11560886).

13212424 is a wasteful number, since it uses less digits than its factorization.

13212424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651559 (or 1651555 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 13212424 is about 3634.8898195131. The cubic root of 13212424 is about 236.4072733850.

Adding to 13212424 its reverse (42421231), we get a palindrome (55633655).

The spelling of 13212424 in words is "thirteen million, two hundred twelve thousand, four hundred twenty-four".