7474240 has 28 divisors (see below), whose sum is σ = 17798796. Its totient is φ = 2989568.

The previous prime is 7474223. The next prime is 7474267. The reversal of 7474240 is 424747.

It can be written as a sum of positive squares in 2 ways, for example, as 4460544 + 3013696 = 2112^2 + 1736^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7474199 and 7474208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11359 + ... + 11998.

Almost surely, 2^7474240 is an apocalyptic number.

It is an amenable number.

7474240 is an abundant number, since it is smaller than the sum of its proper divisors (10324556).

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

7474240 is a wasteful number, since it uses less digits than its factorization.

7474240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23374 (or 23364 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 7474240 is about 2733.9056311438. The cubic root of 7474240 is about 195.5190205699.

Adding to 7474240 its reverse (424747), we get a palindrome (7898987).

The spelling of 7474240 in words is "seven million, four hundred seventy-four thousand, two hundred forty".