8135388 has 18 divisors (see below), whose sum is σ = 20564544. Its totient is φ = 2711784.

The previous prime is 8135383. The next prime is 8135389. The reversal of 8135388 is 8835318.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 225983 = 8135388 / (8 + 1 + 3 + 5 + 3 + 8 + 8).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8135381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112956 + ... + 113027.

Almost surely, 2^8135388 is an apocalyptic number.

It is an amenable number.

8135388 is an abundant number, since it is smaller than the sum of its proper divisors (12429156).

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

8135388 is a wasteful number, since it uses less digits than its factorization.

8135388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225993 (or 225988 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 8135388 is about 2852.2601564373. The cubic root of 8135388 is about 201.1219279534.

The spelling of 8135388 in words is "eight million, one hundred thirty-five thousand, three hundred eighty-eight".