28304914 has 8 divisors (see below), whose sum is σ = 46317168. Its totient is φ = 12865860.

The previous prime is 28304897. The next prime is 28304917. The reversal of 28304914 is 41940382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28304917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643272 + ... + 643315.

It is an arithmetic number, because the mean of its divisors is an integer number (5789646).

Almost surely, 2^28304914 is an apocalyptic number.

28304914 is a deficient number, since it is larger than the sum of its proper divisors (18012254).

28304914 is a wasteful number, since it uses less digits than its factorization.

28304914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286600.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 28304914 is about 5320.2362729488. The cubic root of 28304914 is about 304.7571802010.

It can be divided in two parts, 2830 and 4914, that added together give a square (7744 = 88²).

The spelling of 28304914 in words is "twenty-eight million, three hundred four thousand, nine hundred fourteen".