7642438452 has 72 divisors (see below), whose sum is σ = 21855174432. Its totient is φ = 2315887200.

The previous prime is 7642438423. The next prime is 7642438471. The reversal of 7642438452 is 2548342467.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7642438398 and 7642438407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346699 + ... + 368082.

Almost surely, 2^7642438452 is an apocalyptic number.

It is an amenable number.

7642438452 is an abundant number, since it is smaller than the sum of its proper divisors (14212735980).

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

7642438452 is a wasteful number, since it uses less digits than its factorization.

7642438452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714811 (or 714797 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 45.

The square root of 7642438452 is about 87421.0412429410. The cubic root of 7642438452 is about 1969.7479172753.

The spelling of 7642438452 in words is "seven billion, six hundred forty-two million, four hundred thirty-eight thousand, four hundred fifty-two".