9420724 has 6 divisors (see below), whose sum is σ = 16486274. Its totient is φ = 4710360.

The previous prime is 9420721. The next prime is 9420743. The reversal of 9420724 is 4270249.

It can be written as a sum of positive squares in only one way, i.e., 9412624 + 8100 = 3068^2 + 90^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9420692 and 9420701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9420721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1177587 + ... + 1177594.

Almost surely, 2^9420724 is an apocalyptic number.

It is an amenable number.

9420724 is a deficient number, since it is larger than the sum of its proper divisors (7065550).

9420724 is a wasteful number, since it uses less digits than its factorization.

9420724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355185 (or 2355183 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 9420724 is about 3069.3197943518. The cubic root of 9420724 is about 211.2004115484.

The spelling of 9420724 in words is "nine million, four hundred twenty thousand, seven hundred twenty-four".