81268098 has 16 divisors (see below), whose sum is σ = 162881280. Its totient is φ = 27031856.

The previous prime is 81268097. The next prime is 81268129. The reversal of 81268098 is 89086218.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (81268097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11265 + ... + 17012.

It is an arithmetic number, because the mean of its divisors is an integer number (10180080).

Almost surely, 2^81268098 is an apocalyptic number.

81268098 is an abundant number, since it is smaller than the sum of its proper divisors (81613182).

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

81268098 is a wasteful number, since it uses less digits than its factorization.

81268098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28761.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 81268098 is about 9014.8820291782. The cubic root of 81268098 is about 433.1517086324.

The spelling of 81268098 in words is "eighty-one million, two hundred sixty-eight thousand, ninety-eight".