28921302 has 12 divisors (see below), whose sum is σ = 62662860. Its totient is φ = 9640428.

The previous prime is 28921289. The next prime is 28921303. The reversal of 28921302 is 20312982.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28921303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 803352 + ... + 803387.

It is an arithmetic number, because the mean of its divisors is an integer number (5221905).

Almost surely, 2^28921302 is an apocalyptic number.

28921302 is an abundant number, since it is smaller than the sum of its proper divisors (33741558).

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

28921302 is a wasteful number, since it uses less digits than its factorization.

28921302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606747 (or 1606744 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28921302 is about 5377.8529172896. The cubic root of 28921302 is about 306.9535167839.

The spelling of 28921302 in words is "twenty-eight million, nine hundred twenty-one thousand, three hundred two".