70128098 has 16 divisors (see below), whose sum is σ = 110552640. Its totient is φ = 33321456.

The previous prime is 70128073. The next prime is 70128109. The reversal of 70128098 is 89082107.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7838 + ... + 14201.

It is an arithmetic number, because the mean of its divisors is an integer number (6909540).

Almost surely, 2^70128098 is an apocalyptic number.

70128098 is a deficient number, since it is larger than the sum of its proper divisors (40424542).

70128098 is a wasteful number, since it uses less digits than its factorization.

70128098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22121.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 70128098 is about 8374.2520860074. The cubic root of 70128098 is about 412.3797712666.

The spelling of 70128098 in words is "seventy million, one hundred twenty-eight thousand, ninety-eight".