28470208 has 56 divisors (see below), whose sum is σ = 64079120. Its totient is φ = 12441600.

The previous prime is 28470193. The next prime is 28470209. The reversal of 28470208 is 80207482.

It is a self number, because there is not a number n which added to its sum of digits gives 28470208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28470209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14908 + ... + 16708.

It is an arithmetic number, because the mean of its divisors is an integer number (1144270).

Almost surely, 2^28470208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28470208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32039560).

28470208 is an abundant number, since it is smaller than the sum of its proper divisors (35608912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28470208 is a wasteful number, since it uses less digits than its factorization.

28470208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845 (or 1835 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 28470208 is about 5335.7481199922. The cubic root of 28470208 is about 305.3492657518.

The spelling of 28470208 in words is "twenty-eight million, four hundred seventy thousand, two hundred eight".