81092434 has 16 divisors (see below), whose sum is σ = 127122048. Its totient is φ = 38723872.

The previous prime is 81092423. The next prime is 81092443. The reversal of 81092434 is 43429018.

It is a junction number, because it is equal to n+sod(n) for n = 81092396 and 81092405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49659 + ... + 51265.

It is an arithmetic number, because the mean of its divisors is an integer number (7945128).

Almost surely, 2^81092434 is an apocalyptic number.

81092434 is a deficient number, since it is larger than the sum of its proper divisors (46029614).

81092434 is a wasteful number, since it uses less digits than its factorization.

81092434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 81092434 is about 9005.1337580294. The cubic root of 81092434 is about 432.8393923496.

The spelling of 81092434 in words is "eighty-one million, ninety-two thousand, four hundred thirty-four".