28449655 has 8 divisors (see below), whose sum is σ = 36765792. Its totient is φ = 21008928.

The previous prime is 28449649. The next prime is 28449719. The reversal of 28449655 is 55694482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28449655 - 2³ = 28449647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218779 + ... + 218908.

It is an arithmetic number, because the mean of its divisors is an integer number (4595724).

Almost surely, 2^28449655 is an apocalyptic number.

28449655 is a deficient number, since it is larger than the sum of its proper divisors (8316137).

28449655 is a wasteful number, since it uses less digits than its factorization.

28449655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437705.

The product of its digits is 345600, while the sum is 43.

The square root of 28449655 is about 5333.8218005479. The cubic root of 28449655 is about 305.2757695756.

The spelling of 28449655 in words is "twenty-eight million, four hundred forty-nine thousand, six hundred fifty-five".