28470308 has 24 divisors (see below), whose sum is σ = 53071200. Its totient is φ = 13317248.

The previous prime is 28470301. The next prime is 28470311. The reversal of 28470308 is 80307482.

It is a super-2 number, since 2×28470308² = 1621116875229728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28470301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11003 + ... + 13341.

It is an arithmetic number, because the mean of its divisors is an integer number (2211300).

Almost surely, 2^28470308 is an apocalyptic number.

It is an amenable number.

28470308 is a deficient number, since it is larger than the sum of its proper divisors (24600892).

28470308 is a wasteful number, since it uses less digits than its factorization.

28470308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539 (or 2537 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 28470308 is about 5335.7574907411. The cubic root of 28470308 is about 305.3496232588.

The spelling of 28470308 in words is "twenty-eight million, four hundred seventy thousand, three hundred eight".