12408840 has 48 divisors (see below), whose sum is σ = 40329900. Its totient is φ = 3308928.

The previous prime is 12408797. The next prime is 12408853. The reversal of 12408840 is 4880421.

It can be written as a sum of positive squares in 2 ways, for example, as 12404484 + 4356 = 3522^2 + 66^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16875 + ... + 17594.

Almost surely, 2^12408840 is an apocalyptic number.

12408840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12408840 is an abundant number, since it is smaller than the sum of its proper divisors (27921060).

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

12408840 is a wasteful number, since it uses less digits than its factorization.

12408840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34486 (or 34479 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 12408840 is about 3522.6183443569. The cubic root of 12408840 is about 231.5138949874.

The spelling of 12408840 in words is "twelve million, four hundred eight thousand, eight hundred forty".