188348238 has 48 divisors (see below), whose sum is σ = 442006656. Its totient is φ = 57620160.

The previous prime is 188348233. The next prime is 188348257. The reversal of 188348238 is 832843881.

It is a junction number, because it is equal to n+sod(n) for n = 188348193 and 188348202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188348231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40131 + ... + 44577.

It is an arithmetic number, because the mean of its divisors is an integer number (9208472).

Almost surely, 2^188348238 is an apocalyptic number.

188348238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 188348238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221003328).

188348238 is an abundant number, since it is smaller than the sum of its proper divisors (253658418).

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

188348238 is a wasteful number, since it uses less digits than its factorization.

188348238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4649 (or 4646 counting only the distinct ones).

The product of its digits is 294912, while the sum is 45.

The square root of 188348238 is about 13724.0022588165. The cubic root of 188348238 is about 573.2189253267.

It can be divided in two parts, 18834 and 8238, that added together give a palindrome (27072).

The spelling of 188348238 in words is "one hundred eighty-eight million, three hundred forty-eight thousand, two hundred thirty-eight".