81488082 has 24 divisors (see below), whose sum is σ = 176479344. Its totient is φ = 25072944.

The previous prime is 81488081. The next prime is 81488087. The reversal of 81488082 is 28088418.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 81488082.

It is not an unprimeable number, because it can be changed into a prime (81488081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39168 + ... + 41195.

It is an arithmetic number, because the mean of its divisors is an integer number (7353306).

Almost surely, 2^81488082 is an apocalyptic number.

81488082 is an abundant number, since it is smaller than the sum of its proper divisors (94991262).

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

81488082 is a wasteful number, since it uses less digits than its factorization.

81488082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80394 (or 80381 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 39.

The square root of 81488082 is about 9027.0749415301. The cubic root of 81488082 is about 433.5421882103.

The spelling of 81488082 in words is "eighty-one million, four hundred eighty-eight thousand, eighty-two".