81176046 has 48 divisors (see below), whose sum is σ = 195391440. Its totient is φ = 22391040.

The previous prime is 81176041. The next prime is 81176047. The reversal of 81176046 is 64067118.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 81175998 and 81176016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81176041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3766 + ... + 13286.

It is an arithmetic number, because the mean of its divisors is an integer number (4070655).

Almost surely, 2^81176046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81176046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97695720).

81176046 is an abundant number, since it is smaller than the sum of its proper divisors (114215394).

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

81176046 is a wasteful number, since it uses less digits than its factorization.

81176046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9569 (or 9562 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 81176046 is about 9009.7750249382. The cubic root of 81176046 is about 432.9881038642.

The spelling of 81176046 in words is "eighty-one million, one hundred seventy-six thousand, forty-six".