7400530 has 8 divisors (see below), whose sum is σ = 13320972. Its totient is φ = 2960208.

The previous prime is 7400527. The next prime is 7400531. The reversal of 7400530 is 350047.

It can be written as a sum of positive squares in 2 ways, for example, as 7392961 + 7569 = 2719^2 + 87^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7400498 and 7400507.

It is not an unprimeable number, because it can be changed into a prime (7400531) 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, 370017 + ... + 370036.

Almost surely, 2^7400530 is an apocalyptic number.

7400530 is a deficient number, since it is larger than the sum of its proper divisors (5920442).

7400530 is a wasteful number, since it uses less digits than its factorization.

7400530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740060.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 7400530 is about 2720.3915159403. The cubic root of 7400530 is about 194.8741682166.

Adding to 7400530 its reverse (350047), we get a palindrome (7750577).

The spelling of 7400530 in words is "seven million, four hundred thousand, five hundred thirty".