81360352 has 12 divisors (see below), whose sum is σ = 160178256. Its totient is φ = 40680160.

The previous prime is 81360287. The next prime is 81360379. The reversal of 81360352 is 25306318.

81360352 is nontrivially palindromic in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 81360352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271224 + ... + 1271287.

It is an arithmetic number, because the mean of its divisors is an integer number (13348188).

Almost surely, 2^81360352 is an apocalyptic number.

It is an amenable number.

81360352 is a deficient number, since it is larger than the sum of its proper divisors (78817904).

81360352 is a wasteful number, since it uses less digits than its factorization.

81360352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542521 (or 2542513 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 81360352 is about 9019.9973392457. The cubic root of 81360352 is about 433.3155485140.

The spelling of 81360352 in words is "eighty-one million, three hundred sixty thousand, three hundred fifty-two".