78970238 has 4 divisors (see below), whose sum is σ = 118455360. Its totient is φ = 39485118.

The previous prime is 78970211. The next prime is 78970249. The reversal of 78970238 is 83207987.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83207987 = 127 ⋅655181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19742558 + ... + 19742561.

It is an arithmetic number, because the mean of its divisors is an integer number (29613840).

Almost surely, 2^78970238 is an apocalyptic number.

78970238 is a deficient number, since it is larger than the sum of its proper divisors (39485122).

78970238 is a wasteful number, since it uses less digits than its factorization.

78970238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39485121.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 78970238 is about 8886.5200162943. The cubic root of 78970238 is about 429.0301523934.

The spelling of 78970238 in words is "seventy-eight million, nine hundred seventy thousand, two hundred thirty-eight".