181227936 has 48 divisors (see below), whose sum is σ = 480459168. Its totient is φ = 59808000.

The previous prime is 181227877. The next prime is 181228001. The reversal of 181227936 is 639722181.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 181227894 and 181227903.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351 + ... + 19041.

It is an arithmetic number, because the mean of its divisors is an integer number (10009566).

Almost surely, 2^181227936 is an apocalyptic number.

181227936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181227936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240229584).

181227936 is an abundant number, since it is smaller than the sum of its proper divisors (299231232).

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

181227936 is a wasteful number, since it uses less digits than its factorization.

181227936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18805 (or 18797 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 181227936 is about 13462.0925565084. The cubic root of 181227936 is about 565.9026332199.

The spelling of 181227936 in words is "one hundred eighty-one million, two hundred twenty-seven thousand, nine hundred thirty-six".