14640780 has 96 divisors (see below), whose sum is σ = 51125760. Its totient is φ = 3041280.

The previous prime is 14640761. The next prime is 14640781. The reversal of 14640780 is 8704641.

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

It is not an unprimeable number, because it can be changed into a prime (14640781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3036 + ... + 6204.

It is an arithmetic number, because the mean of its divisors is an integer number (532560).

Almost surely, 2^14640780 is an apocalyptic number.

14640780 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 14640780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25562880).

14640780 is an abundant number, since it is smaller than the sum of its proper divisors (36484980).

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

14640780 is a wasteful number, since it uses less digits than its factorization.

14640780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199 (or 3197 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 14640780 is about 3826.3272207170. The cubic root of 14640780 is about 244.6365846231.

The spelling of 14640780 in words is "fourteen million, six hundred forty thousand, seven hundred eighty".