28493629 has 2 divisors, whose sum is σ = 28493630. Its totient is φ = 28493628.

The previous prime is 28493627. The next prime is 28493657. The reversal of 28493629 is 92639482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22781529 + 5712100 = 4773^2 + 2390^2 .

It is a cyclic number.

It is not a de Polignac number, because 28493629 - 2¹ = 28493627 is a prime.

Together with 28493627, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28493627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14246814 + 14246815.

It is an arithmetic number, because the mean of its divisors is an integer number (14246815).

Almost surely, 2^28493629 is an apocalyptic number.

It is an amenable number.

28493629 is a deficient number, since it is larger than the sum of its proper divisors (1).

28493629 is an equidigital number, since it uses as much as digits as its factorization.

28493629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 43.

The square root of 28493629 is about 5337.9423938443. The cubic root of 28493629 is about 305.4329746001.

The spelling of 28493629 in words is "twenty-eight million, four hundred ninety-three thousand, six hundred twenty-nine".