13408772 has 12 divisors (see below), whose sum is σ = 25270476. Its totient is φ = 6188640.

The previous prime is 13408757. The next prime is 13408781. The reversal of 13408772 is 27780431.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1478656 + 11930116 = 1216^2 + 3454^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128879 + ... + 128982.

It is an arithmetic number, because the mean of its divisors is an integer number (2105873).

Almost surely, 2^13408772 is an apocalyptic number.

It is an amenable number.

13408772 is a deficient number, since it is larger than the sum of its proper divisors (11861704).

13408772 is a wasteful number, since it uses less digits than its factorization.

13408772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257878 (or 257876 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 13408772 is about 3661.7990114150. The cubic root of 13408772 is about 237.5725916606.

The spelling of 13408772 in words is "thirteen million, four hundred eight thousand, seven hundred seventy-two".