857415238 has 16 divisors (see below), whose sum is σ = 1317210336. Its totient is φ = 418429440.

The previous prime is 857415197. The next prime is 857415257. The reversal of 857415238 is 832514758.

857415238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 857415194 and 857415203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498 + ... + 41413.

It is an arithmetic number, because the mean of its divisors is an integer number (82325646).

Almost surely, 2^857415238 is an apocalyptic number.

857415238 is a deficient number, since it is larger than the sum of its proper divisors (459795098).

857415238 is a wasteful number, since it uses less digits than its factorization.

857415238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42159.

The product of its digits is 268800, while the sum is 43.

The square root of 857415238 is about 29281.6536076773. The cubic root of 857415238 is about 950.0148614480.

The spelling of 857415238 in words is "eight hundred fifty-seven million, four hundred fifteen thousand, two hundred thirty-eight".