81948348 has 84 divisors (see below), whose sum is σ = 217594440. Its totient is φ = 26990496.

The previous prime is 81948323. The next prime is 81948353. The reversal of 81948348 is 84384918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 457723 + ... + 457901.

It is an arithmetic number, because the mean of its divisors is an integer number (2590410).

Almost surely, 2^81948348 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 81948348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108797220).

81948348 is an abundant number, since it is smaller than the sum of its proper divisors (135646092).

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

81948348 is a wasteful number, since it uses less digits than its factorization.

81948348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 341 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 81948348 is about 9052.5326842823. The cubic root of 81948348 is about 434.3569094341.

The spelling of 81948348 in words is "eighty-one million, nine hundred forty-eight thousand, three hundred forty-eight".