67072238 has 4 divisors (see below), whose sum is σ = 100608360. Its totient is φ = 33536118.

The previous prime is 67072207. The next prime is 67072241. The reversal of 67072238 is 83227076.

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

It is a super-2 number, since 2×67072238² = 8997370220657288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67072198 and 67072207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16768058 + ... + 16768061.

It is an arithmetic number, because the mean of its divisors is an integer number (25152090).

Almost surely, 2^67072238 is an apocalyptic number.

67072238 is a deficient number, since it is larger than the sum of its proper divisors (33536122).

67072238 is a wasteful number, since it uses less digits than its factorization.

67072238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33536121.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 67072238 is about 8189.7642212704. The cubic root of 67072238 is about 406.3007268254.

The spelling of 67072238 in words is "sixty-seven million, seventy-two thousand, two hundred thirty-eight".