38113218 has 144 divisors (see below), whose sum is σ = 104828256. Its totient is φ = 9884160.

The previous prime is 38113213. The next prime is 38113223. The reversal of 38113218 is 81231183.

It is an interprime number because it is at equal distance from previous prime (38113213) and next prime (38113223).

It is a junction number, because it is equal to n+sod(n) for n = 38113191 and 38113200.

It is not an unprimeable number, because it can be changed into a prime (38113211) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 568821 + ... + 568887.

It is an arithmetic number, because the mean of its divisors is an integer number (727974).

Almost surely, 2^38113218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38113218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52414128).

38113218 is an abundant number, since it is smaller than the sum of its proper divisors (66715038).

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

38113218 is a wasteful number, since it uses less digits than its factorization.

38113218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 113 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 38113218 is about 6173.5903654195. The cubic root of 38113218 is about 336.5311009702.

The spelling of 38113218 in words is "thirty-eight million, one hundred thirteen thousand, two hundred eighteen".