28980396 has 96 divisors (see below), whose sum is σ = 81984000. Its totient is φ = 8817984.

The previous prime is 28980383. The next prime is 28980431. The reversal of 28980396 is 69308982.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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 in 31 ways as a sum of consecutive naturals, for example, 59265 + ... + 59751.

It is an arithmetic number, because the mean of its divisors is an integer number (854000).

Almost surely, 2^28980396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28980396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40992000).

28980396 is an abundant number, since it is smaller than the sum of its proper divisors (53003604).

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

28980396 is a wasteful number, since it uses less digits than its factorization.

28980396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 28980396 is about 5383.3443137143. The cubic root of 28980396 is about 307.1624374239.

The spelling of 28980396 in words is "twenty-eight million, nine hundred eighty thousand, three hundred ninety-six".