13145388 has 12 divisors (see below), whose sum is σ = 30672600. Its totient is φ = 4381792.

The previous prime is 13145387. The next prime is 13145393. The reversal of 13145388 is 88354131.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (13145387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547713 + ... + 547736.

It is an arithmetic number, because the mean of its divisors is an integer number (2556050).

Almost surely, 2^13145388 is an apocalyptic number.

It is an amenable number.

13145388 is an abundant number, since it is smaller than the sum of its proper divisors (17527212).

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

13145388 is a wasteful number, since it uses less digits than its factorization.

13145388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095456 (or 1095454 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 13145388 is about 3625.6569059965. The cubic root of 13145388 is about 236.0067746786.

The spelling of 13145388 in words is "thirteen million, one hundred forty-five thousand, three hundred eighty-eight".