28980326 has 4 divisors (see below), whose sum is σ = 43470492. Its totient is φ = 14490162.

The previous prime is 28980313. The next prime is 28980331. The reversal of 28980326 is 62308982.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62308982 = 2 ⋅31154491.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28980326.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7245080 + ... + 7245083.

It is an arithmetic number, because the mean of its divisors is an integer number (10867623).

Almost surely, 2^28980326 is an apocalyptic number.

28980326 is a deficient number, since it is larger than the sum of its proper divisors (14490166).

28980326 is a wasteful number, since it uses less digits than its factorization.

28980326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14490165.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 28980326 is about 5383.3378121756. The cubic root of 28980326 is about 307.1621901143.

The spelling of 28980326 in words is "twenty-eight million, nine hundred eighty thousand, three hundred twenty-six".