238784642 has 4 divisors (see below), whose sum is σ = 358176966. Its totient is φ = 119392320.

The previous prime is 238784641. The next prime is 238784653. The reversal of 238784642 is 246487832.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 234978241 + 3806401 = 15329^2 + 1951^2 .

It is a junction number, because it is equal to n+sod(n) for n = 238784593 and 238784602.

It is not an unprimeable number, because it can be changed into a prime (238784641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59696159 + ... + 59696162.

Almost surely, 2^238784642 is an apocalyptic number.

238784642 is a deficient number, since it is larger than the sum of its proper divisors (119392324).

238784642 is a wasteful number, since it uses less digits than its factorization.

238784642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119392323.

The product of its digits is 516096, while the sum is 44.

The square root of 238784642 is about 15452.6580884973. The cubic root of 238784642 is about 620.3957255155.

The spelling of 238784642 in words is "two hundred thirty-eight million, seven hundred eighty-four thousand, six hundred forty-two".