81675048 has 64 divisors (see below), whose sum is σ = 251314560. Its totient is φ = 21540096.

The previous prime is 81675043. The next prime is 81675059. The reversal of 81675048 is 84057618.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 81674997 and 81675015.

It is not an unprimeable number, because it can be changed into a prime (81675043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16515 + ... + 20882.

It is an arithmetic number, because the mean of its divisors is an integer number (3926790).

Almost surely, 2^81675048 is an apocalyptic number.

It is an amenable number.

81675048 is an abundant number, since it is smaller than the sum of its proper divisors (169639512).

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

81675048 is a wasteful number, since it uses less digits than its factorization.

81675048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37426 (or 37422 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 81675048 is about 9037.4248544594. The cubic root of 81675048 is about 433.8735075594.

The spelling of 81675048 in words is "eighty-one million, six hundred seventy-five thousand, forty-eight".