997464528 has 120 divisors (see below), whose sum is σ = 2967060096. Its totient is φ = 311731200.

The previous prime is 997464521. The next prime is 997464553. The reversal of 997464528 is 825464799.

997464528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997464521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 809673 + ... + 810903.

Almost surely, 2^997464528 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 997464528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1483530048).

997464528 is an abundant number, since it is smaller than the sum of its proper divisors (1969595568).

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

997464528 is a wasteful number, since it uses less digits than its factorization.

997464528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593 (or 1584 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 997464528 is about 31582.6618257550. The cubic root of 997464528 is about 999.1541273679.

The spelling of 997464528 in words is "nine hundred ninety-seven million, four hundred sixty-four thousand, five hundred twenty-eight".