181265472 has 112 divisors (see below), whose sum is σ = 561035200. Its totient is φ = 57231360.

The previous prime is 181265471. The next prime is 181265501. The reversal of 181265472 is 274562181.

181265472 is a `hidden beast` number, since 181 + 2 + 6 + 5 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (181265471) 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, 30072 + ... + 35592.

Almost surely, 2^181265472 is an apocalyptic number.

181265472 is a gapful number since it is divisible by the number (12) 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 181265472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280517600).

181265472 is an abundant number, since it is smaller than the sum of its proper divisors (379769728).

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

181265472 is a wasteful number, since it uses less digits than its factorization.

181265472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5561 (or 5545 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 181265472 is about 13463.4866212285. The cubic root of 181265472 is about 565.9417005134.

The spelling of 181265472 in words is "one hundred eighty-one million, two hundred sixty-five thousand, four hundred seventy-two".