238705740 has 432 divisors, whose sum is σ = 959212800. Its totient is φ = 46904832.

The previous prime is 238705739. The next prime is 238705741. The reversal of 238705740 is 47507832.

238705740 is a `hidden beast` number, since 2 + 3 + 87 + 0 + 574 + 0 = 666.

238705740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (238705739) and next prime (238705741).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 238705695 and 238705704.

It is not an unprimeable number, because it can be changed into a prime (238705741) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4045831 + ... + 4045889.

It is an arithmetic number, because the mean of its divisors is an integer number (2220400).

Almost surely, 2^238705740 is an apocalyptic number.

238705740 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 238705740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (479606400).

238705740 is an abundant number, since it is smaller than the sum of its proper divisors (720507060).

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

238705740 is a wasteful number, since it uses less digits than its factorization.

238705740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 238705740 is about 15450.1048540131. The cubic root of 238705740 is about 620.3273851961.

The spelling of 238705740 in words is "two hundred thirty-eight million, seven hundred five thousand, seven hundred forty".