81080246 has 32 divisors (see below), whose sum is σ = 136170720. Its totient is φ = 35963136.

The previous prime is 81080231. The next prime is 81080273. The reversal of 81080246 is 64208018.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85145 + ... + 86091.

It is an arithmetic number, because the mean of its divisors is an integer number (4255335).

Almost surely, 2^81080246 is an apocalyptic number.

81080246 is a deficient number, since it is larger than the sum of its proper divisors (55090474).

81080246 is a wasteful number, since it uses less digits than its factorization.

81080246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 81080246 is about 9004.4570075047. The cubic root of 81080246 is about 432.8177063526.

The spelling of 81080246 in words is "eighty-one million, eighty thousand, two hundred forty-six".