81837348 has 48 divisors (see below), whose sum is σ = 194538624. Its totient is φ = 26772480.

The previous prime is 81837317. The next prime is 81837367. The reversal of 81837348 is 84373818.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194178 + ... + 194598.

It is an arithmetic number, because the mean of its divisors is an integer number (4052888).

Almost surely, 2^81837348 is an apocalyptic number.

It is an amenable number.

81837348 is an abundant number, since it is smaller than the sum of its proper divisors (112701276).

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

81837348 is a wasteful number, since it uses less digits than its factorization.

81837348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692 (or 690 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 81837348 is about 9046.3997258578. The cubic root of 81837348 is about 434.1607069759.

The spelling of 81837348 in words is "eighty-one million, eight hundred thirty-seven thousand, three hundred forty-eight".