997239232 has 56 divisors (see below), whose sum is σ = 2204801280. Its totient is φ = 443631360.

The previous prime is 997239223. The next prime is 997239239. The reversal of 997239232 is 232932799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997239239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18019 + ... + 48157.

Almost surely, 2^997239232 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 997239232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1102400640).

997239232 is an abundant number, since it is smaller than the sum of its proper divisors (1207562048).

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

997239232 is a wasteful number, since it uses less digits than its factorization.

997239232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30209 (or 30199 counting only the distinct ones).

The product of its digits is 367416, while the sum is 46.

The square root of 997239232 is about 31579.0948571994. The cubic root of 997239232 is about 999.0788958276.

The spelling of 997239232 in words is "nine hundred ninety-seven million, two hundred thirty-nine thousand, two hundred thirty-two".