181412020 has 24 divisors (see below), whose sum is σ = 387424800. Its totient is φ = 71334432.

The previous prime is 181411939. The next prime is 181412039. The reversal of 181412020 is 20214181.

It is a happy number.

It is a congruent number.

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, 75690 + ... + 78049.

It is an arithmetic number, because the mean of its divisors is an integer number (16142700).

Almost surely, 2^181412020 is an apocalyptic number.

181412020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181412020 is an abundant number, since it is smaller than the sum of its proper divisors (206012780).

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

181412020 is a wasteful number, since it uses less digits than its factorization.

181412020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153807 (or 153805 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 181412020 is about 13468.9279454602. The cubic root of 181412020 is about 566.0941753753.

The spelling of 181412020 in words is "one hundred eighty-one million, four hundred twelve thousand, twenty".