28475205 has 64 divisors (see below), whose sum is σ = 54190080. Its totient is φ = 12614400.

The previous prime is 28475203. The next prime is 28475261. The reversal of 28475205 is 50257482.

It is not a de Polignac number, because 28475205 - 2¹ = 28475203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28475203) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 97039 + ... + 97331.

It is an arithmetic number, because the mean of its divisors is an integer number (846720).

Almost surely, 2^28475205 is an apocalyptic number.

It is an amenable number.

28475205 is a deficient number, since it is larger than the sum of its proper divisors (25714875).

28475205 is a wasteful number, since it uses less digits than its factorization.

28475205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 28475205 is about 5336.2163561835. The cubic root of 28475205 is about 305.3671293494.

It can be divided in two parts, 28475 and 205, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 28475205 in words is "twenty-eight million, four hundred seventy-five thousand, two hundred five".