9920744 has 32 divisors (see below), whose sum is σ = 19430400. Its totient is φ = 4743360.

The previous prime is 9920737. The next prime is 9920749. The reversal of 9920744 is 4470299.

It is an Ulam number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (9920749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26849 + ... + 27215.

It is an arithmetic number, because the mean of its divisors is an integer number (607200).

Almost surely, 2^9920744 is an apocalyptic number.

It is an amenable number.

9920744 is a deficient number, since it is larger than the sum of its proper divisors (9509656).

9920744 is a wasteful number, since it uses less digits than its factorization.

9920744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 9920744 is about 3149.7212575084. The cubic root of 9920744 is about 214.8727857489.

The spelling of 9920744 in words is "nine million, nine hundred twenty thousand, seven hundred forty-four".