28883813 has 8 divisors (see below), whose sum is σ = 33054528. Its totient is φ = 24724224.

The previous prime is 28883807. The next prime is 28883821. The reversal of 28883813 is 31838882.

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

It is not a de Polignac number, because 28883813 - 2⁶ = 28883749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28883843) 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, 3845 + ... + 8517.

It is an arithmetic number, because the mean of its divisors is an integer number (4131816).

Almost surely, 2^28883813 is an apocalyptic number.

It is an amenable number.

28883813 is a deficient number, since it is larger than the sum of its proper divisors (4170715).

28883813 is an equidigital number, since it uses as much as digits as its factorization.

28883813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5563.

The product of its digits is 73728, while the sum is 41.

The square root of 28883813 is about 5374.3662882241. The cubic root of 28883813 is about 306.8208307786.

The spelling of 28883813 in words is "twenty-eight million, eight hundred eighty-three thousand, eight hundred thirteen".