70145938 has 8 divisors (see below), whose sum is σ = 106303932. Its totient is φ = 34711296.

The previous prime is 70145921. The next prime is 70145939. The reversal of 70145938 is 83954107.

It can be written as a sum of positive squares in 2 ways, for example, as 70107129 + 38809 = 8373^2 + 197^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 70145897 and 70145906.

It is not an unprimeable number, because it can be changed into a prime (70145939) 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 3 ways as a sum of consecutive naturals, for example, 180595 + ... + 180982.

Almost surely, 2^70145938 is an apocalyptic number.

70145938 is a deficient number, since it is larger than the sum of its proper divisors (36157994).

70145938 is a wasteful number, since it uses less digits than its factorization.

70145938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361676.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 70145938 is about 8375.3171880234. The cubic root of 70145938 is about 412.4147369536.

The spelling of 70145938 in words is "seventy million, one hundred forty-five thousand, nine hundred thirty-eight".