28562155 has 4 divisors (see below), whose sum is σ = 34274592. Its totient is φ = 22849720.

The previous prime is 28562153. The next prime is 28562161. The reversal of 28562155 is 55126582.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28562155 - 2¹ = 28562153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28562155.

It is not an unprimeable number, because it can be changed into a prime (28562153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2856211 + ... + 2856220.

It is an arithmetic number, because the mean of its divisors is an integer number (8568648).

Almost surely, 2^28562155 is an apocalyptic number.

28562155 is a deficient number, since it is larger than the sum of its proper divisors (5712437).

28562155 is an equidigital number, since it uses as much as digits as its factorization.

28562155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5712436.

The product of its digits is 24000, while the sum is 34.

The square root of 28562155 is about 5344.3573046719. The cubic root of 28562155 is about 305.6776298027.

The spelling of 28562155 in words is "twenty-eight million, five hundred sixty-two thousand, one hundred fifty-five".