28180326 has 32 divisors (see below), whose sum is σ = 57915648. Its totient is φ = 9138080.

The previous prime is 28180319. The next prime is 28180357. The reversal of 28180326 is 62308182.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28180293 and 28180302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34960 + ... + 35756.

It is an arithmetic number, because the mean of its divisors is an integer number (1809864).

Almost surely, 2^28180326 is an apocalyptic number.

28180326 is an abundant number, since it is smaller than the sum of its proper divisors (29735322).

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

28180326 is a wasteful number, since it uses less digits than its factorization.

28180326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 28180326 is about 5308.5144814722. The cubic root of 28180326 is about 304.3093788883.

The spelling of 28180326 in words is "twenty-eight million, one hundred eighty thousand, three hundred twenty-six".