28470229442 has 6 divisors (see below), whose sum is σ = 42705702099. Its totient is φ = 14234995410.

The previous prime is 28470229427. The next prime is 28470229483. The reversal of 28470229442 is 24492207482.

It can be written as a sum of positive squares in only one way, i.e., 14235114721 + 14235114721 = 119311^2 + 119311^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=119311.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28470229393 and 28470229402.

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 2 ways as a sum of consecutive naturals, for example, 178967 + ... + 298277.

Almost surely, 2^28470229442 is an apocalyptic number.

28470229442 is a deficient number, since it is larger than the sum of its proper divisors (14235472657).

28470229442 is an frugal number, since it uses more digits than its factorization.

28470229442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238624 (or 119313 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 28470229442 in words is "twenty-eight billion, four hundred seventy million, two hundred twenty-nine thousand, four hundred forty-two".