28070742211 has 4 divisors (see below), whose sum is σ = 28073331000. Its totient is φ = 28068153424.

The previous prime is 28070742197. The next prime is 28070742221. The reversal of 28070742211 is 11224707082.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11224707082 = 2 ⋅5612353541.

It is a cyclic number.

It is not a de Polignac number, because 28070742211 - 2¹⁷ = 28070611139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28070742221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1278061 + ... + 1299838.

It is an arithmetic number, because the mean of its divisors is an integer number (7018332750).

Almost surely, 2^28070742211 is an apocalyptic number.

28070742211 is a deficient number, since it is larger than the sum of its proper divisors (2588789).

28070742211 is a wasteful number, since it uses less digits than its factorization.

28070742211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588788.

The product of its (nonzero) digits is 12544, while the sum is 34.

The spelling of 28070742211 in words is "twenty-eight billion, seventy million, seven hundred forty-two thousand, two hundred eleven".