81848828 has 12 divisors (see below), whose sum is σ = 143414040. Its totient is φ = 40873392.

The previous prime is 81848807. The next prime is 81848839. The reversal of 81848828 is 82884818.

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, 9026 + ... + 15657.

It is an arithmetic number, because the mean of its divisors is an integer number (11951170).

Almost surely, 2^81848828 is an apocalyptic number.

It is an amenable number.

81848828 is a deficient number, since it is larger than the sum of its proper divisors (61565212).

81848828 is a wasteful number, since it uses less digits than its factorization.

81848828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25516 (or 25514 counting only the distinct ones).

The product of its digits is 262144, while the sum is 47.

The square root of 81848828 is about 9047.0342101708. The cubic root of 81848828 is about 434.1810071281.

The spelling of 81848828 in words is "eighty-one million, eight hundred forty-eight thousand, eight hundred twenty-eight".