238655340 has 288 divisors, whose sum is σ = 919586304. Its totient is φ = 48660480.

The previous prime is 238655321. The next prime is 238655341. The reversal of 238655340 is 43556832.

It is a happy number.

238655340 is a `hidden beast` number, since 23 + 86 + 553 + 4 + 0 = 666.

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 = 238655295 and 238655304.

It is not an unprimeable number, because it can be changed into a prime (238655341) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 928492 + ... + 928748.

It is an arithmetic number, because the mean of its divisors is an integer number (3193008).

Almost surely, 2^238655340 is an apocalyptic number.

238655340 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 238655340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (459793152).

238655340 is an abundant number, since it is smaller than the sum of its proper divisors (680930964).

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

238655340 is a wasteful number, since it uses less digits than its factorization.

238655340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 238655340 is about 15448.4737110175. The cubic root of 238655340 is about 620.2837237675.

The spelling of 238655340 in words is "two hundred thirty-eight million, six hundred fifty-five thousand, three hundred forty".