28802665 has 8 divisors (see below), whose sum is σ = 34610688. Its totient is φ = 23010480.

The previous prime is 28802659. The next prime is 28802671. The reversal of 28802665 is 56620882.

It is an interprime number because it is at equal distance from previous prime (28802659) and next prime (28802671).

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

It is a de Polignac number, because none of the positive numbers 2^k-28802665 is a prime.

It is a super-2 number, since 2×28802665² = 1659187022204450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 504 + ... + 7606.

It is an arithmetic number, because the mean of its divisors is an integer number (4326336).

Almost surely, 2^28802665 is an apocalyptic number.

It is an amenable number.

28802665 is a deficient number, since it is larger than the sum of its proper divisors (5808023).

28802665 is an equidigital number, since it uses as much as digits as its factorization.

28802665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7919.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 28802665 is about 5366.8114369707. The cubic root of 28802665 is about 306.5332273632.

The spelling of 28802665 in words is "twenty-eight million, eight hundred two thousand, six hundred sixty-five".