13135940 has 24 divisors (see below), whose sum is σ = 28476672. Its totient is φ = 5084640.

The previous prime is 13135933. The next prime is 13135957. The reversal of 13135940 is 4953131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9974 + ... + 11213.

It is an arithmetic number, because the mean of its divisors is an integer number (1186528).

Almost surely, 2^13135940 is an apocalyptic number.

13135940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13135940 is an abundant number, since it is smaller than the sum of its proper divisors (15340732).

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

13135940 is a wasteful number, since it uses less digits than its factorization.

13135940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21227 (or 21225 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 13135940 is about 3624.3537354955. The cubic root of 13135940 is about 235.9502193193.

The spelling of 13135940 in words is "thirteen million, one hundred thirty-five thousand, nine hundred forty".