13332440 has 64 divisors (see below), whose sum is σ = 33104160. Its totient is φ = 4792320.

The previous prime is 13332439. The next prime is 13332481. The reversal of 13332440 is 4423331.

13332440 = T₂₇₁ + T₂₇₂ + ... + T₄₆₃.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68984 + ... + 69176.

Almost surely, 2^13332440 is an apocalyptic number.

13332440 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 13332440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16552080).

13332440 is an abundant number, since it is smaller than the sum of its proper divisors (19771720).

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

13332440 is a wasteful number, since it uses less digits than its factorization.

13332440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 13332440 is about 3651.3613899476. The cubic root of 13332440 is about 237.1209243621.

Adding to 13332440 its reverse (4423331), we get a palindrome (17755771).

It can be divided in two parts, 1333 and 2440, that added together give a palindrome (3773).

The spelling of 13332440 in words is "thirteen million, three hundred thirty-two thousand, four hundred forty".