997113852 has 72 divisors (see below), whose sum is σ = 3050008416. Its totient is φ = 268130304.

The previous prime is 997113841. The next prime is 997113911. The reversal of 997113852 is 258311799.

It is a junction number, because it is equal to n+sod(n) for n = 997113798 and 997113807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112093 + ... + 120660.

It is an arithmetic number, because the mean of its divisors is an integer number (42361228).

Almost surely, 2^997113852 is an apocalyptic number.

It is an amenable number.

997113852 is an abundant number, since it is smaller than the sum of its proper divisors (2052894564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997113852 is a wasteful number, since it uses less digits than its factorization.

997113852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232787 (or 232782 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 997113852 is about 31577.1096207363. The cubic root of 997113852 is about 999.0370236409.

The spelling of 997113852 in words is "nine hundred ninety-seven million, one hundred thirteen thousand, eight hundred fifty-two".