28038901769 has 4 divisors (see below), whose sum is σ = 28690969296. Its totient is φ = 27386834244.

The previous prime is 28038901733. The next prime is 28038901823. The reversal of 28038901769 is 96710983082.

28038901769 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28038901769 is a prime.

It is a super-2 number, since 2×28038901769² (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 28038901769.

It is not an unprimeable number, because it can be changed into a prime (28038981769) 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 3 ways as a sum of consecutive naturals, for example, 326033699 + ... + 326033784.

It is an arithmetic number, because the mean of its divisors is an integer number (7172742324).

Almost surely, 2^28038901769 is an apocalyptic number.

It is an amenable number.

28038901769 is a deficient number, since it is larger than the sum of its proper divisors (652067527).

28038901769 is an equidigital number, since it uses as much as digits as its factorization.

28038901769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652067526.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 28038901769 in words is "twenty-eight billion, thirty-eight million, nine hundred one thousand, seven hundred sixty-nine".