12649480 has 32 divisors (see below), whose sum is σ = 28828800. Its totient is φ = 4994496.

The previous prime is 12649453. The next prime is 12649487. The reversal of 12649480 is 8494621.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12649487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1159 + ... + 5161.

It is an arithmetic number, because the mean of its divisors is an integer number (900900).

Almost surely, 2^12649480 is an apocalyptic number.

12649480 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 12649480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14414400).

12649480 is an abundant number, since it is smaller than the sum of its proper divisors (16179320).

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

12649480 is a wasteful number, since it uses less digits than its factorization.

12649480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4093 (or 4089 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 12649480 is about 3556.6107462021. The cubic root of 12649480 is about 233.0008780137. Note that the first 3 decimals are identical.

The spelling of 12649480 in words is "twelve million, six hundred forty-nine thousand, four hundred eighty".