985705238 has 16 divisors (see below), whose sum is σ = 1690191360. Its totient is φ = 422342376.

The previous prime is 985705229. The next prime is 985705243. The reversal of 985705238 is 832507589.

It is a super-2 number, since 2×985705238² = 1943229632441273288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 985705192 and 985705201.

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, 90953 + ... + 101211.

It is an arithmetic number, because the mean of its divisors is an integer number (105636960).

Almost surely, 2^985705238 is an apocalyptic number.

985705238 is a deficient number, since it is larger than the sum of its proper divisors (704486122).

985705238 is a wasteful number, since it uses less digits than its factorization.

985705238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17131.

The product of its (nonzero) digits is 604800, while the sum is 47.

The square root of 985705238 is about 31395.9430181672. The cubic root of 985705238 is about 995.2121928195.

The spelling of 985705238 in words is "nine hundred eighty-five million, seven hundred five thousand, two hundred thirty-eight".