28932769 has 2 divisors, whose sum is σ = 28932770. Its totient is φ = 28932768.

The previous prime is 28932767. The next prime is 28932863. The reversal of 28932769 is 96723982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25887744 + 3045025 = 5088^2 + 1745^2 .

It is a cyclic number.

It is not a de Polignac number, because 28932769 - 2¹ = 28932767 is a prime.

It is a super-2 number, since 2×28932769² = 1674210244014722, which contains 22 as substring.

Together with 28932767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28932767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14466384 + 14466385.

It is an arithmetic number, because the mean of its divisors is an integer number (14466385).

Almost surely, 2^28932769 is an apocalyptic number.

It is an amenable number.

28932769 is a deficient number, since it is larger than the sum of its proper divisors (1).

28932769 is an equidigital number, since it uses as much as digits as its factorization.

28932769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 46.

The square root of 28932769 is about 5378.9189434309. The cubic root of 28932769 is about 306.9940793986.

The spelling of 28932769 in words is "twenty-eight million, nine hundred thirty-two thousand, seven hundred sixty-nine".