28546769 has 4 divisors (see below), whose sum is σ = 28573620. Its totient is φ = 28519920.

The previous prime is 28546751. The next prime is 28546787. The reversal of 28546769 is 96764582.

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

It is an interprime number because it is at equal distance from previous prime (28546751) and next prime (28546787).

It can be written as a sum of positive squares in 2 ways, for example, as 8179600 + 20367169 = 2860^2 + 4513^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28546769 is a prime.

It is a super-2 number, since 2×28546769² = 1629836040678722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28546709) 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, 11762 + ... + 13979.

It is an arithmetic number, because the mean of its divisors is an integer number (7143405).

Almost surely, 2^28546769 is an apocalyptic number.

It is an amenable number.

28546769 is a deficient number, since it is larger than the sum of its proper divisors (26851).

28546769 is a wasteful number, since it uses less digits than its factorization.

28546769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26850.

The product of its digits is 725760, while the sum is 47.

The square root of 28546769 is about 5342.9176486261. The cubic root of 28546769 is about 305.6227319752.

The spelling of 28546769 in words is "twenty-eight million, five hundred forty-six thousand, seven hundred sixty-nine".