28860648434 has 16 divisors (see below), whose sum is σ = 45847967328. Its totient is φ = 13578380352.

The previous prime is 28860648431. The next prime is 28860648463. The reversal of 28860648434 is 43484606882.

It is not an unprimeable number, because it can be changed into a prime (28860648431) by changing a digit.

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, 57749 + ... + 247095.

It is an arithmetic number, because the mean of its divisors is an integer number (2865497958).

Almost surely, 2^28860648434 is an apocalyptic number.

28860648434 is a deficient number, since it is larger than the sum of its proper divisors (16987318894).

28860648434 is a wasteful number, since it uses less digits than its factorization.

28860648434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193849.

The product of its (nonzero) digits is 7077888, while the sum is 53.

The spelling of 28860648434 in words is "twenty-eight billion, eight hundred sixty million, six hundred forty-eight thousand, four hundred thirty-four".