238537066 has 12 divisors (see below), whose sum is σ = 360456642. Its totient is φ = 118391304.

The previous prime is 238537051. The next prime is 238537069. The reversal of 238537066 is 660735832.

238537066 = T₁₂₆₀₉ + T₁₂₆₁₀ + T₁₂₆₁₁.

It can be written as a sum of positive squares in only one way, i.e., 238054041 + 483025 = 15429^2 + 695^2 .

It is not an unprimeable number, because it can be changed into a prime (238537069) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35556 + ... + 41728.

Almost surely, 2^238537066 is an apocalyptic number.

238537066 is the 12611-st centered triangular number.

238537066 is a deficient number, since it is larger than the sum of its proper divisors (121919576).

238537066 is an equidigital number, since it uses as much as digits as its factorization.

238537066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6453 (or 6314 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 238537066 is about 15444.6452209172. The cubic root of 238537066 is about 620.1812390717.

The spelling of 238537066 in words is "two hundred thirty-eight million, five hundred thirty-seven thousand, sixty-six".