181728016 has 40 divisors (see below), whose sum is σ = 363351744. Its totient is φ = 87984000.

The previous prime is 181728013. The next prime is 181728017. The reversal of 181728016 is 610827181.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (181728013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147981 + ... + 149203.

Almost surely, 2^181728016 is an apocalyptic number.

181728016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

181728016 is a deficient number, since it is larger than the sum of its proper divisors (181623728).

181728016 is a wasteful number, since it uses less digits than its factorization.

181728016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519 (or 1513 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 34.

The square root of 181728016 is about 13480.6533966273. The cubic root of 181728016 is about 566.4226720419.

The spelling of 181728016 in words is "one hundred eighty-one million, seven hundred twenty-eight thousand, sixteen".