81488010 has 64 divisors (see below), whose sum is σ = 201801600. Its totient is φ = 21047040.

The previous prime is 81488003. The next prime is 81488059. The reversal of 81488010 is 1088418.

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

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 233316 + ... + 233664.

It is an arithmetic number, because the mean of its divisors is an integer number (3153150).

Almost surely, 2^81488010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81488010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100900800).

81488010 is an abundant number, since it is smaller than the sum of its proper divisors (120313590).

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

81488010 is a wasteful number, since it uses less digits than its factorization.

81488010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583.

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

The square root of 81488010 is about 9027.0709535264. The cubic root of 81488010 is about 433.5420605228.

The spelling of 81488010 in words is "eighty-one million, four hundred eighty-eight thousand, ten".