28628015385 has 16 divisors (see below), whose sum is σ = 48499226496. Its totient is φ = 14370140928.

The previous prime is 28628015359. The next prime is 28628015399. The reversal of 28628015385 is 58351082682.

It is not a de Polignac number, because 28628015385 - 2⁶ = 28628015321 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56133109 + ... + 56133618.

It is an arithmetic number, because the mean of its divisors is an integer number (3031201656).

Almost surely, 2^28628015385 is an apocalyptic number.

It is an amenable number.

28628015385 is a deficient number, since it is larger than the sum of its proper divisors (19871211111).

28628015385 is a wasteful number, since it uses less digits than its factorization.

28628015385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112266752.

The product of its (nonzero) digits is 921600, while the sum is 48.

The spelling of 28628015385 in words is "twenty-eight billion, six hundred twenty-eight million, fifteen thousand, three hundred eighty-five".