81514248 has 32 divisors (see below), whose sum is σ = 206660160. Its totient is φ = 26788160.

The previous prime is 81514229. The next prime is 81514259. The reversal of 81514248 is 84241518.

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, 22215 + ... + 25622.

It is an arithmetic number, because the mean of its divisors is an integer number (6458130).

Almost surely, 2^81514248 is an apocalyptic number.

It is an amenable number.

81514248 is an abundant number, since it is smaller than the sum of its proper divisors (125145912).

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

81514248 is a wasteful number, since it uses less digits than its factorization.

81514248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47917 (or 47913 counting only the distinct ones).

The product of its digits is 10240, while the sum is 33.

The square root of 81514248 is about 9028.5241318834. The cubic root of 81514248 is about 433.5885870237.

The spelling of 81514248 in words is "eighty-one million, five hundred fourteen thousand, two hundred forty-eight".