81348148 has 24 divisors (see below), whose sum is σ = 169771392. Its totient is φ = 33347424.

The previous prime is 81348083. The next prime is 81348151. The reversal of 81348148 is 84184318.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62515 + ... + 63802.

It is an arithmetic number, because the mean of its divisors is an integer number (7073808).

Almost surely, 2^81348148 is an apocalyptic number.

It is an amenable number.

81348148 is an abundant number, since it is smaller than the sum of its proper divisors (88423244).

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

81348148 is a wasteful number, since it uses less digits than its factorization.

81348148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126351 (or 126349 counting only the distinct ones).

The product of its digits is 24576, while the sum is 37.

The square root of 81348148 is about 9019.3208170017. The cubic root of 81348148 is about 433.2938817469.

The spelling of 81348148 in words is "eighty-one million, three hundred forty-eight thousand, one hundred forty-eight".