28428052115 has 8 divisors (see below), whose sum is σ = 34133066880. Its totient is φ = 22729505472.

The previous prime is 28428052097. The next prime is 28428052193. The reversal of 28428052115 is 51125082482.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28428052115 - 2⁸ = 28428051859 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 1607354 + ... + 1624943.

It is an arithmetic number, because the mean of its divisors is an integer number (4266633360).

Almost surely, 2^28428052115 is an apocalyptic number.

28428052115 is a deficient number, since it is larger than the sum of its proper divisors (5705014765).

28428052115 is a wasteful number, since it uses less digits than its factorization.

28428052115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3234061.

The product of its (nonzero) digits is 51200, while the sum is 38.

The spelling of 28428052115 in words is "twenty-eight billion, four hundred twenty-eight million, fifty-two thousand, one hundred fifteen".