28073911 has 8 divisors (see below), whose sum is σ = 28823040. Its totient is φ = 27334008.

The previous prime is 28073873. The next prime is 28073917. The reversal of 28073911 is 11937082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28073911 - 2⁹ = 28073399 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 (28073917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4090 + ... + 8536.

It is an arithmetic number, because the mean of its divisors is an integer number (3602880).

Almost surely, 2^28073911 is an apocalyptic number.

28073911 is a deficient number, since it is larger than the sum of its proper divisors (749129).

28073911 is a wasteful number, since it uses less digits than its factorization.

28073911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4613.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 28073911 is about 5298.4819524086. The cubic root of 28073911 is about 303.9258497302.

The spelling of 28073911 in words is "twenty-eight million, seventy-three thousand, nine hundred eleven".