28672330 has 16 divisors (see below), whose sum is σ = 54326880. Its totient is φ = 10865232.

The previous prime is 28672313. The next prime is 28672337. The reversal of 28672330 is 3327682.

It is a junction number, because it is equal to n+sod(n) for n = 28672292 and 28672301.

It is not an unprimeable number, because it can be changed into a prime (28672337) 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, 75264 + ... + 75643.

It is an arithmetic number, because the mean of its divisors is an integer number (3395430).

Almost surely, 2^28672330 is an apocalyptic number.

28672330 is a deficient number, since it is larger than the sum of its proper divisors (25654550).

28672330 is a wasteful number, since it uses less digits than its factorization.

28672330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150933.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 28672330 is about 5354.6549842170. The cubic root of 28672330 is about 306.0701634714.

The spelling of 28672330 in words is "twenty-eight million, six hundred seventy-two thousand, three hundred thirty".