28293586642 has 16 divisors (see below), whose sum is σ = 44947491840. Its totient is φ = 13311482688.

The previous prime is 28293586631. The next prime is 28293586663. The reversal of 28293586642 is 24668539282.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50959 + ... + 243277.

It is an arithmetic number, because the mean of its divisors is an integer number (2809218240).

Almost surely, 2^28293586642 is an apocalyptic number.

28293586642 is a deficient number, since it is larger than the sum of its proper divisors (16653905198).

28293586642 is a wasteful number, since it uses less digits than its factorization.

28293586642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196665.

The product of its digits is 9953280, while the sum is 55.

The spelling of 28293586642 in words is "twenty-eight billion, two hundred ninety-three million, five hundred eighty-six thousand, six hundred forty-two".