238071982 has 4 divisors (see below), whose sum is σ = 357107976. Its totient is φ = 119035990.

The previous prime is 238071979. The next prime is 238071983. The reversal of 238071982 is 289170832.

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

It is a super-2 number, since 2×238071982² = 113356537226816648, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238071983) 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 as a sum of consecutive naturals, namely, 59517994 + ... + 59517997.

It is an arithmetic number, because the mean of its divisors is an integer number (89276994).

Almost surely, 2^238071982 is an apocalyptic number.

238071982 is a deficient number, since it is larger than the sum of its proper divisors (119035994).

238071982 is a wasteful number, since it uses less digits than its factorization.

238071982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119035993.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 238071982 is about 15429.5813941921. The cubic root of 238071982 is about 619.7779138671. Note that the first 3 decimals are identical.

The spelling of 238071982 in words is "two hundred thirty-eight million, seventy-one thousand, nine hundred eighty-two".