238601766 has 64 divisors (see below), whose sum is σ = 549739008. Its totient is φ = 68387328.

The previous prime is 238601719. The next prime is 238601767. The reversal of 238601766 is 667106832.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238601767) 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 in 31 ways as a sum of consecutive naturals, for example, 135705 + ... + 137451.

It is an arithmetic number, because the mean of its divisors is an integer number (8589672).

Almost surely, 2^238601766 is an apocalyptic number.

238601766 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 238601766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274869504).

238601766 is an abundant number, since it is smaller than the sum of its proper divisors (311137242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

238601766 is a wasteful number, since it uses less digits than its factorization.

238601766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 238601766 is about 15446.7396559921. The cubic root of 238601766 is about 620.2373059681.

The spelling of 238601766 in words is "two hundred thirty-eight million, six hundred one thousand, seven hundred sixty-six".