238140715 has 4 divisors (see below), whose sum is σ = 285768864. Its totient is φ = 190512568.

The previous prime is 238140703. The next prime is 238140733. The reversal of 238140715 is 517041832.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238140715 is a prime.

It is a super-2 number, since 2×238140715² = 113422000281422450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23814067 + ... + 23814076.

It is an arithmetic number, because the mean of its divisors is an integer number (71442216).

Almost surely, 2^238140715 is an apocalyptic number.

238140715 is a deficient number, since it is larger than the sum of its proper divisors (47628149).

238140715 is an equidigital number, since it uses as much as digits as its factorization.

238140715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47628148.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 238140715 is about 15431.8085459871. The cubic root of 238140715 is about 619.8375528274.

The spelling of 238140715 in words is "two hundred thirty-eight million, one hundred forty thousand, seven hundred fifteen".