28995769 has 4 divisors (see below), whose sum is σ = 31631760. Its totient is φ = 26359780.

The previous prime is 28995739. The next prime is 28995809. The reversal of 28995769 is 96759982.

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 not a de Polignac number, because 28995769 - 2⁷ = 28995641 is a prime.

It is a super-2 number, since 2×28995769² = 1681509239802722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28995739) 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, 1317979 + ... + 1318000.

It is an arithmetic number, because the mean of its divisors is an integer number (7907940).

Almost surely, 2^28995769 is an apocalyptic number.

It is an amenable number.

28995769 is a deficient number, since it is larger than the sum of its proper divisors (2635991).

28995769 is a wasteful number, since it uses less digits than its factorization.

28995769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635990.

The product of its digits is 2449440, while the sum is 55.

The square root of 28995769 is about 5384.7719543171. The cubic root of 28995769 is about 307.2167404942.

It can be divided in two parts, 2899 and 5769, that added together give a palindrome (8668).

The spelling of 28995769 in words is "twenty-eight million, nine hundred ninety-five thousand, seven hundred sixty-nine".