81627030 has 96 divisors (see below), whose sum is σ = 232098048. Its totient is φ = 19814400.

The previous prime is 81627011. The next prime is 81627041. The reversal of 81627030 is 3072618.

81627030 is a `hidden beast` number, since 8 + 1 + 627 + 0 + 30 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 81626985 and 81627003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46570 + ... + 48290.

It is an arithmetic number, because the mean of its divisors is an integer number (2417688).

Almost surely, 2^81627030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81627030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116049024).

81627030 is an abundant number, since it is smaller than the sum of its proper divisors (150471018).

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

81627030 is a wasteful number, since it uses less digits than its factorization.

81627030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782 (or 1779 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 81627030 is about 9034.7678442780. The cubic root of 81627030 is about 433.7884639516.

Adding to 81627030 its reverse (3072618), we get a palindrome (84699648).

The spelling of 81627030 in words is "eighty-one million, six hundred twenty-seven thousand, thirty".