9400720 has 40 divisors (see below), whose sum is σ = 24980544. Its totient is φ = 3222912.

The previous prime is 9400697. The next prime is 9400723. The reversal of 9400720 is 270049.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 9400691 and 9400700.

It is not an unprimeable number, because it can be changed into a prime (9400723) 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, 7834 + ... + 8953.

Almost surely, 2^9400720 is an apocalyptic number.

It is an amenable number.

9400720 is an abundant number, since it is smaller than the sum of its proper divisors (15579824).

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

9400720 is a wasteful number, since it uses less digits than its factorization.

9400720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16807 (or 16801 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 9400720 is about 3066.0593601560. The cubic root of 9400720 is about 211.0508177054.

Adding to 9400720 its reverse (270049), we get a palindrome (9670769).

The spelling of 9400720 in words is "nine million, four hundred thousand, seven hundred twenty".