28997363 has 8 divisors (see below), whose sum is σ = 30618000. Its totient is φ = 27386208.

The previous prime is 28997347. The next prime is 28997377. The reversal of 28997363 is 36379982.

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 28997363 - 2⁴ = 28997347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28997333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4445 + ... + 8817.

It is an arithmetic number, because the mean of its divisors is an integer number (3827250).

Almost surely, 2^28997363 is an apocalyptic number.

28997363 is a deficient number, since it is larger than the sum of its proper divisors (1620637).

28997363 is a wasteful number, since it uses less digits than its factorization.

28997363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4741.

The product of its digits is 489888, while the sum is 47.

The square root of 28997363 is about 5384.9199622650. The cubic root of 28997363 is about 307.2223699881. Note that the first 3 decimals are identical.

The spelling of 28997363 in words is "twenty-eight million, nine hundred ninety-seven thousand, three hundred sixty-three".