28802973 has 4 divisors (see below), whose sum is σ = 38403968. Its totient is φ = 19201980.

The previous prime is 28802959. The next prime is 28802989. The reversal of 28802973 is 37920882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28802973 - 2⁵ = 28802941 is a prime.

It is a super-2 number, since 2×28802973² = 1659222507277458, 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 (28802173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4800493 + ... + 4800498.

It is an arithmetic number, because the mean of its divisors is an integer number (9600992).

Almost surely, 2^28802973 is an apocalyptic number.

It is an amenable number.

28802973 is a deficient number, since it is larger than the sum of its proper divisors (9600995).

28802973 is an equidigital number, since it uses as much as digits as its factorization.

28802973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9600994.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 28802973 is about 5366.8401317721. The cubic root of 28802973 is about 306.5343199924.

The spelling of 28802973 in words is "twenty-eight million, eight hundred two thousand, nine hundred seventy-three".