997240244 has 96 divisors (see below), whose sum is σ = 2354558976. Its totient is φ = 356906880.

The previous prime is 997240241. The next prime is 997240259. The reversal of 997240244 is 442042799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997240241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1052579 + ... + 1053525.

It is an arithmetic number, because the mean of its divisors is an integer number (24526656).

Almost surely, 2^997240244 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 997240244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1177279488).

997240244 is an abundant number, since it is smaller than the sum of its proper divisors (1357318732).

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

997240244 is a wasteful number, since it uses less digits than its factorization.

997240244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245 (or 1243 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 997240244 is about 31579.1108804539. The cubic root of 997240244 is about 999.0792337831.

The spelling of 997240244 in words is "nine hundred ninety-seven million, two hundred forty thousand, two hundred forty-four".