997846528 has 80 divisors (see below), whose sum is σ = 2296103040. Its totient is φ = 424359936.

The previous prime is 997846517. The next prime is 997846537. The reversal of 997846528 is 825648799.

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, 497175 + ... + 499177.

It is an arithmetic number, because the mean of its divisors is an integer number (28701288).

Almost surely, 2^997846528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 997846528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1148051520).

997846528 is an abundant number, since it is smaller than the sum of its proper divisors (1298256512).

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

997846528 is a wasteful number, since it uses less digits than its factorization.

997846528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2167 (or 2151 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 58.

The square root of 997846528 is about 31588.7088688348. The cubic root of 997846528 is about 999.2816601114.

The spelling of 997846528 in words is "nine hundred ninety-seven million, eight hundred forty-six thousand, five hundred twenty-eight".