81896092 has 6 divisors (see below), whose sum is σ = 143318168. Its totient is φ = 40948044.

The previous prime is 81896069. The next prime is 81896107. The reversal of 81896092 is 29069818.

It is a happy number.

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, 10237008 + ... + 10237015.

Almost surely, 2^81896092 is an apocalyptic number.

It is an amenable number.

81896092 is a deficient number, since it is larger than the sum of its proper divisors (61422076).

81896092 is a wasteful number, since it uses less digits than its factorization.

81896092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20474027 (or 20474025 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 81896092 is about 9049.6459599257. The cubic root of 81896092 is about 434.2645643514.

The spelling of 81896092 in words is "eighty-one million, eight hundred ninety-six thousand, ninety-two".