13224918 has 16 divisors (see below), whose sum is σ = 30228480. Its totient is φ = 3778536.

The previous prime is 13224917. The next prime is 13224949. The reversal of 13224918 is 81942231.

It is a super-2 number, since 2×13224918² = 349796912213448, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13224917) 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, 157398 + ... + 157481.

It is an arithmetic number, because the mean of its divisors is an integer number (1889280).

Almost surely, 2^13224918 is an apocalyptic number.

13224918 is an abundant number, since it is smaller than the sum of its proper divisors (17003562).

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

13224918 is a wasteful number, since it uses less digits than its factorization.

13224918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314891.

The product of its digits is 3456, while the sum is 30.

The square root of 13224918 is about 3636.6080349688. The cubic root of 13224918 is about 236.4817674606.

The spelling of 13224918 in words is "thirteen million, two hundred twenty-four thousand, nine hundred eighteen".