58218138 has 48 divisors (see below), whose sum is σ = 142365600. Its totient is φ = 17031840.

The previous prime is 58218119. The next prime is 58218151. The reversal of 58218138 is 83181285.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 673 + ... + 10811.

It is an arithmetic number, because the mean of its divisors is an integer number (2965950).

Almost surely, 2^58218138 is an apocalyptic number.

58218138 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 58218138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71182800).

58218138 is an abundant number, since it is smaller than the sum of its proper divisors (84147462).

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

58218138 is a wasteful number, since it uses less digits than its factorization.

58218138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10187 (or 10184 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 58218138 is about 7630.0811266985. The cubic root of 58218138 is about 387.5723358543.

The spelling of 58218138 in words is "fifty-eight million, two hundred eighteen thousand, one hundred thirty-eight".