28974419771 has 4 divisors (see below), whose sum is σ = 31608457944. Its totient is φ = 26340381600.

The previous prime is 28974419741. The next prime is 28974419777. The reversal of 28974419771 is 17791447982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28974419771 - 2¹⁸ = 28974157627 is a prime.

It is a super-2 number, since 2×28974419771² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28974419771.

It is not an unprimeable number, because it can be changed into a prime (28974419777) 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, 1317019070 + ... + 1317019091.

It is an arithmetic number, because the mean of its divisors is an integer number (7902114486).

Almost surely, 2^28974419771 is an apocalyptic number.

28974419771 is a deficient number, since it is larger than the sum of its proper divisors (2634038173).

28974419771 is a wasteful number, since it uses less digits than its factorization.

28974419771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2634038172.

The product of its digits is 7112448, while the sum is 59.

The spelling of 28974419771 in words is "twenty-eight billion, nine hundred seventy-four million, four hundred nineteen thousand, seven hundred seventy-one".