81927060 has 48 divisors (see below), whose sum is σ = 230830656. Its totient is φ = 21710592.

The previous prime is 81927037. The next prime is 81927071. The reversal of 81927060 is 6072918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5592 + ... + 13968.

It is an arithmetic number, because the mean of its divisors is an integer number (4808972).

Almost surely, 2^81927060 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81927060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115415328).

81927060 is an abundant number, since it is smaller than the sum of its proper divisors (148903596).

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

81927060 is a wasteful number, since it uses less digits than its factorization.

81927060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8552 (or 8550 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 81927060 is about 9051.3568043692. The cubic root of 81927060 is about 434.3192947215.

Adding to 81927060 its reverse (6072918), we get a palindrome (87999978).

The spelling of 81927060 in words is "eighty-one million, nine hundred twenty-seven thousand, sixty".