28955849 has 8 divisors (see below), whose sum is σ = 31232712. Its totient is φ = 26686080.

The previous prime is 28955831. The next prime is 28955851. The reversal of 28955849 is 94855982.

It can be written as a sum of positive squares in 4 ways, for example, as 4700224 + 24255625 = 2168^2 + 4925^2 .

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 28955849 - 2⁸ = 28955593 is a prime.

It is a super-3 number, since 3×28955849³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28955797 and 28955806.

It is not an unprimeable number, because it can be changed into a prime (28955819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9317 + ... + 12029.

It is an arithmetic number, because the mean of its divisors is an integer number (3904089).

Almost surely, 2^28955849 is an apocalyptic number.

It is an amenable number.

28955849 is a deficient number, since it is larger than the sum of its proper divisors (2276863).

28955849 is a wasteful number, since it uses less digits than its factorization.

28955849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3547.

The product of its digits is 1036800, while the sum is 50.

The square root of 28955849 is about 5381.0639282581. The cubic root of 28955849 is about 307.0756885957.

The spelling of 28955849 in words is "twenty-eight million, nine hundred fifty-five thousand, eight hundred forty-nine".