70878238 has 4 divisors (see below), whose sum is σ = 106317360. Its totient is φ = 35439118.

The previous prime is 70878221. The next prime is 70878239. The reversal of 70878238 is 83287807.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 70878194 and 70878203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70878239) by changing a digit.

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 as a sum of consecutive naturals, namely, 17719558 + ... + 17719561.

It is an arithmetic number, because the mean of its divisors is an integer number (26579340).

Almost surely, 2^70878238 is an apocalyptic number.

70878238 is a deficient number, since it is larger than the sum of its proper divisors (35439122).

70878238 is a wasteful number, since it uses less digits than its factorization.

70878238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35439121.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 70878238 is about 8418.9214273564. The cubic root of 70878238 is about 413.8449285809.

The spelling of 70878238 in words is "seventy million, eight hundred seventy-eight thousand, two hundred thirty-eight".