857328538 has 8 divisors (see below), whose sum is σ = 1402901280. Its totient is φ = 389694780.

The previous prime is 857328523. The next prime is 857328557. The reversal of 857328538 is 835823758.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 857328491 and 857328500.

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, 19484718 + ... + 19484761.

It is an arithmetic number, because the mean of its divisors is an integer number (175362660).

Almost surely, 2^857328538 is an apocalyptic number.

857328538 is a deficient number, since it is larger than the sum of its proper divisors (545572742).

857328538 is a wasteful number, since it uses less digits than its factorization.

857328538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38969492.

The product of its digits is 1612800, while the sum is 49.

The square root of 857328538 is about 29280.1731210729. The cubic root of 857328538 is about 949.9828392099.

The spelling of 857328538 in words is "eight hundred fifty-seven million, three hundred twenty-eight thousand, five hundred thirty-eight".