28220095 has 8 divisors (see below), whose sum is σ = 34690320. Its totient is φ = 22025280.

The previous prime is 28220089. The next prime is 28220123. The reversal of 28220095 is 59002282.

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-28220095 is a prime.

It is a congruent 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, 68625 + ... + 69034.

It is an arithmetic number, because the mean of its divisors is an integer number (4336290).

Almost surely, 2^28220095 is an apocalyptic number.

28220095 is a deficient number, since it is larger than the sum of its proper divisors (6470225).

28220095 is a wasteful number, since it uses less digits than its factorization.

28220095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137705.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 28220095 is about 5312.2589357071. The cubic root of 28220095 is about 304.4524620592.

The spelling of 28220095 in words is "twenty-eight million, two hundred twenty thousand, ninety-five".