81614848 has 48 divisors (see below), whose sum is σ = 186535440. Its totient is φ = 34971648.

The previous prime is 81614843. The next prime is 81614849. The reversal of 81614848 is 84841618.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 81614848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81614843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11490 + ... + 17182.

It is an arithmetic number, because the mean of its divisors is an integer number (3886155).

Almost surely, 2^81614848 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 81614848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93267720).

81614848 is an abundant number, since it is smaller than the sum of its proper divisors (104920592).

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

81614848 is an equidigital number, since it uses as much as digits as its factorization.

81614848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5722 (or 5702 counting only the distinct ones).

The product of its digits is 49152, while the sum is 40.

The square root of 81614848 is about 9034.0936457400. The cubic root of 81614848 is about 433.7668833797.

The spelling of 81614848 in words is "eighty-one million, six hundred fourteen thousand, eight hundred forty-eight".