9997732 has 24 divisors (see below), whose sum is σ = 18369792. Its totient is φ = 4752000.

The previous prime is 9997711. The next prime is 9997739. The reversal of 9997732 is 2377999.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9997739) 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, 24732 + ... + 25132.

It is an arithmetic number, because the mean of its divisors is an integer number (765408).

Almost surely, 2^9997732 is an apocalyptic number.

9997732 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

9997732 is a deficient number, since it is larger than the sum of its proper divisors (8372060).

9997732 is a wasteful number, since it uses less digits than its factorization.

9997732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 697 counting only the distinct ones).

The product of its digits is 214326, while the sum is 46.

The square root of 9997732 is about 3161.9190375467. The cubic root of 9997732 is about 215.4271802454.

The spelling of 9997732 in words is "nine million, nine hundred ninety-seven thousand, seven hundred thirty-two".