28953649 has 2 divisors, whose sum is σ = 28953650. Its totient is φ = 28953648.

The previous prime is 28953643. The next prime is 28953671. The reversal of 28953649 is 94635982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28302400 + 651249 = 5320^2 + 807^2 .

It is a cyclic number.

It is not a de Polignac number, because 28953649 - 2³ = 28953641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28953599 and 28953608.

It is not a weakly prime, because it can be changed into another prime (28953641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14476824 + 14476825.

It is an arithmetic number, because the mean of its divisors is an integer number (14476825).

Almost surely, 2^28953649 is an apocalyptic number.

It is an amenable number.

28953649 is a deficient number, since it is larger than the sum of its proper divisors (1).

28953649 is an equidigital number, since it uses as much as digits as its factorization.

28953649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 46.

The square root of 28953649 is about 5380.8595038339. The cubic root of 28953649 is about 307.0679114264.

The spelling of 28953649 in words is "twenty-eight million, nine hundred fifty-three thousand, six hundred forty-nine".