28967769 has 6 divisors (see below), whose sum is σ = 41842346. Its totient is φ = 19311840.

The previous prime is 28967759. The next prime is 28967773. The reversal of 28967769 is 96776982.

It can be written as a sum of positive squares in only one way, i.e., 25887744 + 3080025 = 5088^2 + 1755^2 .

It is not a de Polignac number, because 28967769 - 2⁴ = 28967753 is a prime.

It is a super-2 number, since 2×28967769² = 1678263281674722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28967759) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1609312 + ... + 1609329.

Almost surely, 2^28967769 is an apocalyptic number.

It is an amenable number.

28967769 is a deficient number, since it is larger than the sum of its proper divisors (12874577).

28967769 is a wasteful number, since it uses less digits than its factorization.

28967769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3218647 (or 3218644 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 28967769 is about 5382.1714019529. The cubic root of 28967769 is about 307.1178198654.

The spelling of 28967769 in words is "twenty-eight million, nine hundred sixty-seven thousand, seven hundred sixty-nine".