81248352 has 48 divisors (see below), whose sum is σ = 213942960. Its totient is φ = 26998272.

The previous prime is 81248329. The next prime is 81248381. The reversal of 81248352 is 25384218.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34674 + ... + 36942.

It is an arithmetic number, because the mean of its divisors is an integer number (4457145).

Almost surely, 2^81248352 is an apocalyptic number.

It is an amenable number.

81248352 is an abundant number, since it is smaller than the sum of its proper divisors (132694608).

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

81248352 is a wasteful number, since it uses less digits than its factorization.

81248352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655 (or 2647 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 81248352 is about 9013.7867736041. The cubic root of 81248352 is about 433.1166243183.

The spelling of 81248352 in words is "eighty-one million, two hundred forty-eight thousand, three hundred fifty-two".