8355138 has 32 divisors (see below), whose sum is σ = 18496512. Its totient is φ = 2494800.

The previous prime is 8355133. The next prime is 8355173. The reversal of 8355138 is 8315538.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8355099 and 8355108.

It is not an unprimeable number, because it can be changed into a prime (8355131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3795 + ... + 5577.

It is an arithmetic number, because the mean of its divisors is an integer number (578016).

Almost surely, 2^8355138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8355138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9248256).

8355138 is an abundant number, since it is smaller than the sum of its proper divisors (10141374).

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

8355138 is a wasteful number, since it uses less digits than its factorization.

8355138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870.

The product of its digits is 14400, while the sum is 33.

The square root of 8355138 is about 2890.5255577490. The cubic root of 8355138 is about 202.9167396994.

The spelling of 8355138 in words is "eight million, three hundred fifty-five thousand, one hundred thirty-eight".