81883448 has 16 divisors (see below), whose sum is σ = 155694960. Its totient is φ = 40364800.

The previous prime is 81883433. The next prime is 81883453. The reversal of 81883448 is 84438818.

It is a junction number, because it is equal to n+sod(n) for n = 81883399 and 81883408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71513 + ... + 72648.

It is an arithmetic number, because the mean of its divisors is an integer number (9730935).

Almost surely, 2^81883448 is an apocalyptic number.

It is an amenable number.

81883448 is a deficient number, since it is larger than the sum of its proper divisors (73811512).

81883448 is a wasteful number, since it uses less digits than its factorization.

81883448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144238 (or 144234 counting only the distinct ones).

The product of its digits is 196608, while the sum is 44.

The square root of 81883448 is about 9048.9473420945. The cubic root of 81883448 is about 434.2422143889.

The spelling of 81883448 in words is "eighty-one million, eight hundred eighty-three thousand, four hundred forty-eight".