28220295 has 16 divisors (see below), whose sum is σ = 45313632. Its totient is φ = 14997120.

The previous prime is 28220273. The next prime is 28220317. The reversal of 28220295 is 59202282.

It is an interprime number because it is at equal distance from previous prime (28220273) and next prime (28220317).

It is not a de Polignac number, because 28220295 - 2⁸ = 28220039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1185 + ... + 7605.

It is an arithmetic number, because the mean of its divisors is an integer number (2832102).

Almost surely, 2^28220295 is an apocalyptic number.

28220295 is a deficient number, since it is larger than the sum of its proper divisors (17093337).

28220295 is a wasteful number, since it uses less digits than its factorization.

28220295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6722.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 28220295 is about 5312.2777600574. The cubic root of 28220295 is about 304.4531812907.

The spelling of 28220295 in words is "twenty-eight million, two hundred twenty thousand, two hundred ninety-five".