28938292111 has 16 divisors (see below), whose sum is σ = 29848736736. Its totient is φ = 28034850816.

The previous prime is 28938292087. The next prime is 28938292139. The reversal of 28938292111 is 11129283982.

It is a cyclic number.

It is not a de Polignac number, because 28938292111 - 2⁷ = 28938291983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28938292511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15173820 + ... + 15175726.

It is an arithmetic number, because the mean of its divisors is an integer number (1865546046).

Almost surely, 2^28938292111 is an apocalyptic number.

28938292111 is a deficient number, since it is larger than the sum of its proper divisors (910444625).

28938292111 is a wasteful number, since it uses less digits than its factorization.

28938292111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3498.

The product of its digits is 124416, while the sum is 46.

The spelling of 28938292111 in words is "twenty-eight billion, nine hundred thirty-eight million, two hundred ninety-two thousand, one hundred eleven".