81088410 has 64 divisors (see below), whose sum is σ = 213591168. Its totient is φ = 19578624.

The previous prime is 81088393. The next prime is 81088417. The reversal of 81088410 is 1488018.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (81088417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18709 + ... + 22631.

It is an arithmetic number, because the mean of its divisors is an integer number (3337362).

Almost surely, 2^81088410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81088410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106795584).

81088410 is an abundant number, since it is smaller than the sum of its proper divisors (132502758).

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

81088410 is a wasteful number, since it uses less digits than its factorization.

81088410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3999.

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 81088410 is about 9004.9103271493. The cubic root of 81088410 is about 432.8322327234.

The spelling of 81088410 in words is "eighty-one million, eighty-eight thousand, four hundred ten".