238097857 has 8 divisors (see below), whose sum is σ = 240056640. Its totient is φ = 236144400.

The previous prime is 238097851. The next prime is 238097897. The reversal of 238097857 is 758790832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 238097857 - 2¹⁹ = 237573569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 238097857.

It is not an unprimeable number, because it can be changed into a prime (238097851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184938 + ... + 186220.

It is an arithmetic number, because the mean of its divisors is an integer number (30007080).

Almost surely, 2^238097857 is an apocalyptic number.

It is an amenable number.

238097857 is a deficient number, since it is larger than the sum of its proper divisors (1958783).

238097857 is a wasteful number, since it uses less digits than its factorization.

238097857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663.

The product of its (nonzero) digits is 846720, while the sum is 49.

The square root of 238097857 is about 15430.4198581892. The cubic root of 238097857 is about 619.8003667018.

The spelling of 238097857 in words is "two hundred thirty-eight million, ninety-seven thousand, eight hundred fifty-seven".