28307346 has 32 divisors (see below), whose sum is σ = 60300288. Its totient is φ = 8828160.

The previous prime is 28307341. The next prime is 28307381. The reversal of 28307346 is 64370382.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28307341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18756 + ... + 20208.

It is an arithmetic number, because the mean of its divisors is an integer number (1884384).

Almost surely, 2^28307346 is an apocalyptic number.

28307346 is an abundant number, since it is smaller than the sum of its proper divisors (31992942).

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

28307346 is a wasteful number, since it uses less digits than its factorization.

28307346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 28307346 is about 5320.4648293171. The cubic root of 28307346 is about 304.7659083466.

The spelling of 28307346 in words is "twenty-eight million, three hundred seven thousand, three hundred forty-six".