70238438 has 16 divisors (see below), whose sum is σ = 108164160. Its totient is φ = 34195176.

The previous prime is 70238429. The next prime is 70238449. The reversal of 70238438 is 83483207.

It is a junction number, because it is equal to n+sod(n) for n = 70238398 and 70238407.

It is a congruent number.

It is an unprimeable number.

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, 9845 + ... + 15407.

It is an arithmetic number, because the mean of its divisors is an integer number (6760260).

Almost surely, 2^70238438 is an apocalyptic number.

70238438 is a deficient number, since it is larger than the sum of its proper divisors (37925722).

70238438 is a wasteful number, since it uses less digits than its factorization.

70238438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5731.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 70238438 is about 8380.8375476440. The cubic root of 70238438 is about 412.5959382606.

The spelling of 70238438 in words is "seventy million, two hundred thirty-eight thousand, four hundred thirty-eight".