238514640 has 320 divisors, whose sum is σ = 929273856. Its totient is φ = 49268736.

The previous prime is 238514621. The next prime is 238514677. The reversal of 238514640 is 46415832.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1463199 + ... + 1463361.

Almost surely, 2^238514640 is an apocalyptic number.

238514640 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 238514640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (464636928).

238514640 is an abundant number, since it is smaller than the sum of its proper divisors (690759216).

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

238514640 is a wasteful number, since it uses less digits than its factorization.

238514640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 238514640 is about 15443.9191917078. The cubic root of 238514640 is about 620.1618030702.

The spelling of 238514640 in words is "two hundred thirty-eight million, five hundred fourteen thousand, six hundred forty".