28953449 has 8 divisors (see below), whose sum is σ = 33129600. Its totient is φ = 24787296.

The previous prime is 28953437. The next prime is 28953487. The reversal of 28953449 is 94435982.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28953449 is a prime.

It is a super-3 number, since 3×28953449³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28953409) 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, 5372 + ... + 9314.

It is an arithmetic number, because the mean of its divisors is an integer number (4141200).

Almost surely, 2^28953449 is an apocalyptic number.

It is an amenable number.

28953449 is a deficient number, since it is larger than the sum of its proper divisors (4176151).

28953449 is a wasteful number, since it uses less digits than its factorization.

28953449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4999.

The product of its digits is 311040, while the sum is 44.

The square root of 28953449 is about 5380.8409194103. The cubic root of 28953449 is about 307.0672043914.

The spelling of 28953449 in words is "twenty-eight million, nine hundred fifty-three thousand, four hundred forty-nine".