81846704 has 40 divisors (see below), whose sum is σ = 169261488. Its totient is φ = 38205440.

The previous prime is 81846697. The next prime is 81846707. The reversal of 81846704 is 40764818.

It is not an unprimeable number, because it can be changed into a prime (81846707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34484 + ... + 36780.

Almost surely, 2^81846704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81846704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84630744).

81846704 is an abundant number, since it is smaller than the sum of its proper divisors (87414784).

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

81846704 is a wasteful number, since it uses less digits than its factorization.

81846704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453 (or 2447 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 81846704 is about 9046.9168228740. The cubic root of 81846704 is about 434.1772513894.

The spelling of 81846704 in words is "eighty-one million, eight hundred forty-six thousand, seven hundred four".