28899327 has 4 divisors (see below), whose sum is σ = 38532440. Its totient is φ = 19266216.

The previous prime is 28899319. The next prime is 28899329. The reversal of 28899327 is 72399882.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28899327 - 2³ = 28899319 is a prime.

It is a super-2 number, since 2×28899327² = 1670342202105858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28899329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4816552 + ... + 4816557.

It is an arithmetic number, because the mean of its divisors is an integer number (9633110).

Almost surely, 2^28899327 is an apocalyptic number.

28899327 is a deficient number, since it is larger than the sum of its proper divisors (9633113).

28899327 is an equidigital number, since it uses as much as digits as its factorization.

28899327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9633112.

The product of its digits is 435456, while the sum is 48.

The square root of 28899327 is about 5375.8094274258. The cubic root of 28899327 is about 306.8757538872.

The spelling of 28899327 in words is "twenty-eight million, eight hundred ninety-nine thousand, three hundred twenty-seven".