81198846 has 24 divisors (see below), whose sum is σ = 176333664. Its totient is φ = 27004320.

The previous prime is 81198833. The next prime is 81198853. The reversal of 81198846 is 64889118.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3291 + ... + 13161.

It is an arithmetic number, because the mean of its divisors is an integer number (7347236).

Almost surely, 2^81198846 is an apocalyptic number.

81198846 is an abundant number, since it is smaller than the sum of its proper divisors (95134818).

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

81198846 is a wasteful number, since it uses less digits than its factorization.

81198846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10336 (or 10333 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 81198846 is about 9011.0402285197. The cubic root of 81198846 is about 433.0286380083.

The spelling of 81198846 in words is "eighty-one million, one hundred ninety-eight thousand, eight hundred forty-six".