28180324 has 6 divisors (see below), whose sum is σ = 49315574. Its totient is φ = 14090160.

The previous prime is 28180319. The next prime is 28180357. The reversal of 28180324 is 42308182.

It can be written as a sum of positive squares in only one way, i.e., 20160100 + 8020224 = 4490^2 + 2832^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28180292 and 28180301.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3522537 + ... + 3522544.

Almost surely, 2^28180324 is an apocalyptic number.

It is an amenable number.

28180324 is a deficient number, since it is larger than the sum of its proper divisors (21135250).

28180324 is a wasteful number, since it uses less digits than its factorization.

28180324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7045085 (or 7045083 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 28180324 is about 5308.5142930956. The cubic root of 28180324 is about 304.3093716893.

The spelling of 28180324 in words is "twenty-eight million, one hundred eighty thousand, three hundred twenty-four".