9721036 has 24 divisors (see below), whose sum is σ = 18585504. Its totient is φ = 4421760.

The previous prime is 9721031. The next prime is 9721039. The reversal of 9721036 is 6301279.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 9720995 and 9721013.

It is not an unprimeable number, because it can be changed into a prime (9721031) 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, 2376 + ... + 5008.

It is an arithmetic number, because the mean of its divisors is an integer number (774396).

Almost surely, 2^9721036 is an apocalyptic number.

It is an amenable number.

9721036 is a deficient number, since it is larger than the sum of its proper divisors (8864468).

9721036 is a wasteful number, since it uses less digits than its factorization.

9721036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721 (or 2719 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 9721036 is about 3117.8575977745. The cubic root of 9721036 is about 213.4211801841.

The spelling of 9721036 in words is "nine million, seven hundred twenty-one thousand, thirty-six".