81848028 has 24 divisors (see below), whose sum is σ = 191826432. Its totient is φ = 27161584.

The previous prime is 81848017. The next prime is 81848057. The reversal of 81848028 is 82084818.

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, 12300 + ... + 17747.

It is an arithmetic number, because the mean of its divisors is an integer number (7992768).

Almost surely, 2^81848028 is an apocalyptic number.

It is an amenable number.

81848028 is an abundant number, since it is smaller than the sum of its proper divisors (109978404).

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

81848028 is a wasteful number, since it uses less digits than its factorization.

81848028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30281 (or 30279 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 39.

The square root of 81848028 is about 9046.9899966785. The cubic root of 81848028 is about 434.1795925449.

The spelling of 81848028 in words is "eighty-one million, eight hundred forty-eight thousand, twenty-eight".