28052842 has 4 divisors (see below), whose sum is σ = 42079266. Its totient is φ = 14026420.

The previous prime is 28052837. The next prime is 28052867. The reversal of 28052842 is 24825082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24825082 = 2 ⋅12412541.

It can be written as a sum of positive squares in only one way, i.e., 20151121 + 7901721 = 4489^2 + 2811^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7013209 + ... + 7013212.

Almost surely, 2^28052842 is an apocalyptic number.

28052842 is a deficient number, since it is larger than the sum of its proper divisors (14026424).

28052842 is a wasteful number, since it uses less digits than its factorization.

28052842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14026423.

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 28052842 is about 5296.4933682579. The cubic root of 28052842 is about 303.8498002825.

The spelling of 28052842 in words is "twenty-eight million, fifty-two thousand, eight hundred forty-two".