81343098 has 24 divisors (see below), whose sum is σ = 180543636. Its totient is φ = 26452800.

The previous prime is 81343091. The next prime is 81343127. The reversal of 81343098 is 89034318.

It can be written as a sum of positive squares in 2 ways, for example, as 63728289 + 17614809 = 7983^2 + 4197^2 .

It is not an unprimeable number, because it can be changed into a prime (81343091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54373 + ... + 55848.

Almost surely, 2^81343098 is an apocalyptic number.

81343098 is an abundant number, since it is smaller than the sum of its proper divisors (99200538).

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

81343098 is a wasteful number, since it uses less digits than its factorization.

81343098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110270 (or 110267 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 81343098 is about 9019.0408580957. The cubic root of 81343098 is about 433.2849154318.

The spelling of 81343098 in words is "eighty-one million, three hundred forty-three thousand, ninety-eight".