7423720 has 16 divisors (see below), whose sum is σ = 16703460. Its totient is φ = 2969472.

The previous prime is 7423711. The next prime is 7423723. The reversal of 7423720 is 273247.

It can be written as a sum of positive squares in 2 ways, for example, as 6980164 + 443556 = 2642^2 + 666^2 .

It is a super-2 number, since 2×7423720² = 110223237276800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7423723) 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 3 ways as a sum of consecutive naturals, for example, 92757 + ... + 92836.

Almost surely, 2^7423720 is an apocalyptic number.

It is an amenable number.

7423720 is an abundant number, since it is smaller than the sum of its proper divisors (9279740).

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

7423720 is a wasteful number, since it uses less digits than its factorization.

7423720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185604 (or 185600 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 7423720 is about 2724.6504362945. The cubic root of 7423720 is about 195.0775058983.

Adding to 7423720 its reverse (273247), we get a palindrome (7696967).

The spelling of 7423720 in words is "seven million, four hundred twenty-three thousand, seven hundred twenty".