13022440 has 32 divisors (see below), whose sum is σ = 29412000. Its totient is φ = 5189184.

The previous prime is 13022423. The next prime is 13022441. The reversal of 13022440 is 4422031.

13022440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13022441) 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, 14731 + ... + 15589.

It is an arithmetic number, because the mean of its divisors is an integer number (919125).

Almost surely, 2^13022440 is an apocalyptic number.

13022440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13022440 is an abundant number, since it is smaller than the sum of its proper divisors (16389560).

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

13022440 is a wasteful number, since it uses less digits than its factorization.

13022440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249 (or 1245 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 13022440 is about 3608.6618018318. The cubic root of 13022440 is about 235.2686831821.

Adding to 13022440 its reverse (4422031), we get a palindrome (17444471).

The spelling of 13022440 in words is "thirteen million, twenty-two thousand, four hundred forty".