28415255 has 16 divisors (see below), whose sum is σ = 38108448. Its totient is φ = 20160000.

The previous prime is 28415249. The next prime is 28415287. The reversal of 28415255 is 55251482.

It is a de Polignac number, because none of the positive numbers 2^k-28415255 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4046 + ... + 8555.

It is an arithmetic number, because the mean of its divisors is an integer number (2381778).

Almost surely, 2^28415255 is an apocalyptic number.

28415255 is a deficient number, since it is larger than the sum of its proper divisors (9693193).

28415255 is a wasteful number, since it uses less digits than its factorization.

28415255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12658.

The product of its digits is 16000, while the sum is 32.

The square root of 28415255 is about 5330.5961205104. The cubic root of 28415255 is about 305.1526781948.

The spelling of 28415255 in words is "twenty-eight million, four hundred fifteen thousand, two hundred fifty-five".