997525732 has 72 divisors (see below), whose sum is σ = 2146556160. Its totient is φ = 403603200.

The previous prime is 997525723. The next prime is 997525733. The reversal of 997525732 is 237525799.

997525732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (997525733) 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, 354732 + ... + 357532.

It is an arithmetic number, because the mean of its divisors is an integer number (29813280).

Almost surely, 2^997525732 is an apocalyptic number.

997525732 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 997525732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1073278080).

997525732 is an abundant number, since it is smaller than the sum of its proper divisors (1149030428).

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

997525732 is a wasteful number, since it uses less digits than its factorization.

997525732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2921 (or 2912 counting only the distinct ones).

The product of its digits is 1190700, while the sum is 49.

The square root of 997525732 is about 31583.6307602530. The cubic root of 997525732 is about 999.1745628410.

The spelling of 997525732 in words is "nine hundred ninety-seven million, five hundred twenty-five thousand, seven hundred thirty-two".