13750440 has 96 divisors (see below), whose sum is σ = 45390240. Its totient is φ = 3329920.

The previous prime is 13750439. The next prime is 13750469. The reversal of 13750440 is 4405731.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 13750440.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14047 + ... + 14993.

It is an arithmetic number, because the mean of its divisors is an integer number (472815).

Almost surely, 2^13750440 is an apocalyptic number.

13750440 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 13750440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22695120).

13750440 is an abundant number, since it is smaller than the sum of its proper divisors (31639800).

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

13750440 is a wasteful number, since it uses less digits than its factorization.

13750440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 968 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 13750440 is about 3708.1585726611. The cubic root of 13750440 is about 239.5735482498.

The spelling of 13750440 in words is "thirteen million, seven hundred fifty thousand, four hundred forty".