28974711 has 8 divisors (see below), whose sum is σ = 38928384. Its totient is φ = 19168760.

The previous prime is 28974709. The next prime is 28974721. The reversal of 28974711 is 11747982.

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 28974711 - 2¹ = 28974709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28974711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28974721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36471 + ... + 37256.

It is an arithmetic number, because the mean of its divisors is an integer number (4866048).

Almost surely, 2^28974711 is an apocalyptic number.

28974711 is a deficient number, since it is larger than the sum of its proper divisors (9953673).

28974711 is a wasteful number, since it uses less digits than its factorization.

28974711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73861.

The product of its digits is 28224, while the sum is 39.

The square root of 28974711 is about 5382.8162703180. The cubic root of 28974711 is about 307.1423510564.

The spelling of 28974711 in words is "twenty-eight million, nine hundred seventy-four thousand, seven hundred eleven".