238801780 has 48 divisors (see below), whose sum is σ = 575769600. Its totient is φ = 81497088.

The previous prime is 238801769. The next prime is 238801781. The reversal of 238801780 is 87108832.

238801780 = 3983² + 3984² + ... + 3997².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238801781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27396 + ... + 35044.

It is an arithmetic number, because the mean of its divisors is an integer number (11995200).

Almost surely, 2^238801780 is an apocalyptic number.

238801780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238801780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287884800).

238801780 is an abundant number, since it is smaller than the sum of its proper divisors (336967820).

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

238801780 is a wasteful number, since it uses less digits than its factorization.

238801780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7888 (or 7886 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 238801780 is about 15453.2126109751. The cubic root of 238801780 is about 620.4105674633.

The spelling of 238801780 in words is "two hundred thirty-eight million, eight hundred one thousand, seven hundred eighty".