181480572 has 144 divisors (see below), whose sum is σ = 583145472. Its totient is φ = 46293120.

The previous prime is 181480567. The next prime is 181480577. The reversal of 181480572 is 275084181.

181480572 is a `hidden beast` number, since 1 + 8 + 1 + 4 + 80 + 572 = 666.

181480572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (181480567) and next prime (181480577).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181480577) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100663 + ... + 102449.

Almost surely, 2^181480572 is an apocalyptic number.

181480572 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 181480572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291572736).

181480572 is an abundant number, since it is smaller than the sum of its proper divisors (401664900).

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

181480572 is a wasteful number, since it uses less digits than its factorization.

181480572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848 (or 1843 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 181480572 is about 13471.4725253032. The cubic root of 181480572 is about 566.1654716448.

The spelling of 181480572 in words is "one hundred eighty-one million, four hundred eighty thousand, five hundred seventy-two".