28894638092 has 6 divisors (see below), whose sum is σ = 50565616668. Its totient is φ = 14447319044.

The previous prime is 28894638083. The next prime is 28894638109. The reversal of 28894638092 is 29083649882.

It is a super-2 number, since 2×28894638092² (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 (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3611829758 + ... + 3611829765.

It is an arithmetic number, because the mean of its divisors is an integer number (8427602778).

Almost surely, 2^28894638092 is an apocalyptic number.

It is an amenable number.

28894638092 is a deficient number, since it is larger than the sum of its proper divisors (21670978576).

28894638092 is a wasteful number, since it uses less digits than its factorization.

28894638092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7223659527 (or 7223659525 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 59.

The spelling of 28894638092 in words is "twenty-eight billion, eight hundred ninety-four million, six hundred thirty-eight thousand, ninety-two".