52728442 has 8 divisors (see below), whose sum is σ = 85176756. Its totient is φ = 24336192.

The previous prime is 52728391. The next prime is 52728451. The reversal of 52728442 is 24482725.

It can be written as a sum of positive squares in 2 ways, for example, as 47210641 + 5517801 = 6871^2 + 2349^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 52728398 and 52728407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013983 + ... + 1014034.

Almost surely, 2^52728442 is an apocalyptic number.

52728442 is a deficient number, since it is larger than the sum of its proper divisors (32448314).

52728442 is a wasteful number, since it uses less digits than its factorization.

52728442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028032.

The product of its digits is 35840, while the sum is 34.

The square root of 52728442 is about 7261.4352575782. The cubic root of 52728442 is about 374.9859360651.

The spelling of 52728442 in words is "fifty-two million, seven hundred twenty-eight thousand, four hundred forty-two".