28182530 has 32 divisors (see below), whose sum is σ = 53023680. Its totient is φ = 10774080.

The previous prime is 28182523. The next prime is 28182533. The reversal of 28182530 is 3528182.

It is a junction number, because it is equal to n+sod(n) for n = 28182493 and 28182502.

It is not an unprimeable number, because it can be changed into a prime (28182533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21185 + ... + 22475.

It is an arithmetic number, because the mean of its divisors is an integer number (1656990).

Almost surely, 2^28182530 is an apocalyptic number.

28182530 is a deficient number, since it is larger than the sum of its proper divisors (24841150).

28182530 is a wasteful number, since it uses less digits than its factorization.

28182530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 28182530 is about 5308.7220684455. The cubic root of 28182530 is about 304.3173120872.

The spelling of 28182530 in words is "twenty-eight million, one hundred eighty-two thousand, five hundred thirty".