7442778252 has 72 divisors (see below), whose sum is σ = 21491613696. Its totient is φ = 1962926784.

The previous prime is 7442778209. The next prime is 7442778269. The reversal of 7442778252 is 2528772447.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 247948 + ... + 276339.

Almost surely, 2^7442778252 is an apocalyptic number.

It is an amenable number.

7442778252 is an abundant number, since it is smaller than the sum of its proper divisors (14048835444).

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

7442778252 is a wasteful number, since it uses less digits than its factorization.

7442778252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524327 (or 524312 counting only the distinct ones).

The product of its digits is 1756160, while the sum is 48.

The square root of 7442778252 is about 86271.5379021378. The cubic root of 7442778252 is about 1952.4429825695.

The spelling of 7442778252 in words is "seven billion, four hundred forty-two million, seven hundred seventy-eight thousand, two hundred fifty-two".