14781540 has 48 divisors (see below), whose sum is σ = 42017472. Its totient is φ = 3881856.

The previous prime is 14781527. The next prime is 14781577. The reversal of 14781540 is 4518741.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 14781498 and 14781507.

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, 2182 + ... + 5858.

It is an arithmetic number, because the mean of its divisors is an integer number (875364).

Almost surely, 2^14781540 is an apocalyptic number.

14781540 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 14781540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21008736).

14781540 is an abundant number, since it is smaller than the sum of its proper divisors (27235932).

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

14781540 is a wasteful number, since it uses less digits than its factorization.

14781540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756 (or 3754 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 14781540 is about 3844.6768394756. The cubic root of 14781540 is about 245.4180838719.

The spelling of 14781540 in words is "fourteen million, seven hundred eighty-one thousand, five hundred forty".