28340530 has 32 divisors (see below), whose sum is σ = 55178496. Its totient is φ = 10439424.

The previous prime is 28340527. The next prime is 28340549. The reversal of 28340530 is 3504382.

It is a junction number, because it is equal to n+sod(n) for n = 28340495 and 28340504.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6217 + ... + 9763.

It is an arithmetic number, because the mean of its divisors is an integer number (1724328).

Almost surely, 2^28340530 is an apocalyptic number.

28340530 is a deficient number, since it is larger than the sum of its proper divisors (26837966).

28340530 is a wasteful number, since it uses less digits than its factorization.

28340530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3618.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 28340530 is about 5323.5824404249. The cubic root of 28340530 is about 304.8849516814.

The spelling of 28340530 in words is "twenty-eight million, three hundred forty thousand, five hundred thirty".