81048858 has 16 divisors (see below), whose sum is σ = 176834016. Its totient is φ = 24560240.

The previous prime is 81048853. The next prime is 81048883. The reversal of 81048858 is 85884018.

It is not an unprimeable number, because it can be changed into a prime (81048853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613941 + ... + 614072.

It is an arithmetic number, because the mean of its divisors is an integer number (11052126).

Almost surely, 2^81048858 is an apocalyptic number.

81048858 is an abundant number, since it is smaller than the sum of its proper divisors (95785158).

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

81048858 is a wasteful number, since it uses less digits than its factorization.

81048858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228029.

The product of its (nonzero) digits is 81920, while the sum is 42.

The square root of 81048858 is about 9002.7139241453. The cubic root of 81048858 is about 432.7618479643.

The spelling of 81048858 in words is "eighty-one million, forty-eight thousand, eight hundred fifty-eight".