13422240 has 192 divisors, whose sum is σ = 50803200. Its totient is φ = 3290112.

The previous prime is 13422229. The next prime is 13422247. The reversal of 13422240 is 4222431.

13422240 is a `hidden beast` number, since 1 + 3 + 422 + 240 = 666.

13422240 is nontrivially palindromic in base 11.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (13422247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56041 + ... + 56279.

It is an arithmetic number, because the mean of its divisors is an integer number (264600).

Almost surely, 2^13422240 is an apocalyptic number.

13422240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13422240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25401600).

13422240 is an abundant number, since it is smaller than the sum of its proper divisors (37380960).

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

13422240 is a wasteful number, since it uses less digits than its factorization.

13422240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 13422240 is about 3663.6375366567. The cubic root of 13422240 is about 237.6521057033.

Adding to 13422240 its reverse (4222431), we get a palindrome (17644671).

The spelling of 13422240 in words is "thirteen million, four hundred twenty-two thousand, two hundred forty".