28579254938 has 32 divisors (see below), whose sum is σ = 47210252544. Its totient is φ = 12892940352.

The previous prime is 28579254917. The next prime is 28579254943. The reversal of 28579254938 is 83945297582.

It is a super-2 number, since 2×28579254938² (a number of 22 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 946856 + ... + 976572.

It is an arithmetic number, because the mean of its divisors is an integer number (1475320392).

Almost surely, 2^28579254938 is an apocalyptic number.

28579254938 is a deficient number, since it is larger than the sum of its proper divisors (18630997606).

28579254938 is a wasteful number, since it uses less digits than its factorization.

28579254938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30566.

The product of its digits is 43545600, while the sum is 62.

The spelling of 28579254938 in words is "twenty-eight billion, five hundred seventy-nine million, two hundred fifty-four thousand, nine hundred thirty-eight".