81341276 has 6 divisors (see below), whose sum is σ = 142347240. Its totient is φ = 40670636.

The previous prime is 81341233. The next prime is 81341291. The reversal of 81341276 is 67214318.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10167656 + ... + 10167663.

It is an arithmetic number, because the mean of its divisors is an integer number (23724540).

Almost surely, 2^81341276 is an apocalyptic number.

It is an amenable number.

81341276 is a deficient number, since it is larger than the sum of its proper divisors (61005964).

81341276 is a wasteful number, since it uses less digits than its factorization.

81341276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20335323 (or 20335321 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 81341276 is about 9018.9398490066. The cubic root of 81341276 is about 433.2816803653.

The spelling of 81341276 in words is "eighty-one million, three hundred forty-one thousand, two hundred seventy-six".