997753432 has 64 divisors (see below), whose sum is σ = 2109240000. Its totient is φ = 439025664.

The previous prime is 997753429. The next prime is 997753483. The reversal of 997753432 is 234357799.

It is a super-2 number, since 2×997753432² = 1991023822135557248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1073544 + ... + 1074472.

It is an arithmetic number, because the mean of its divisors is an integer number (32956875).

Almost surely, 2^997753432 is an apocalyptic number.

997753432 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 997753432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1054620000).

997753432 is an abundant number, since it is smaller than the sum of its proper divisors (1111486568).

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

997753432 is a wasteful number, since it uses less digits than its factorization.

997753432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420 (or 1416 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 49.

The square root of 997753432 is about 31587.2352699631. The cubic root of 997753432 is about 999.2505825137.

The spelling of 997753432 in words is "nine hundred ninety-seven million, seven hundred fifty-three thousand, four hundred thirty-two".