28208474 has 64 divisors (see below), whose sum is σ = 54639360. Its totient is φ = 10644480.

The previous prime is 28208459. The next prime is 28208489. The reversal of 28208474 is 47480282.

28208474 is nontrivially palindromic in base 6.

It is an interprime number because it is at equal distance from previous prime (28208459) and next prime (28208489).

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 420989 + ... + 421055.

It is an arithmetic number, because the mean of its divisors is an integer number (853740).

Almost surely, 2^28208474 is an apocalyptic number.

28208474 is a deficient number, since it is larger than the sum of its proper divisors (26430886).

28208474 is a wasteful number, since it uses less digits than its factorization.

28208474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183.

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 28208474 is about 5311.1650322693. The cubic root of 28208474 is about 304.4106652730.

It can be divided in two parts, 28208 and 474, that added together give a palindrome (28682).

The spelling of 28208474 in words is "twenty-eight million, two hundred eight thousand, four hundred seventy-four".