28980798 has 64 divisors (see below), whose sum is σ = 72921600. Its totient is φ = 7459200.

The previous prime is 28980769. The next prime is 28980799. The reversal of 28980798 is 89708982.

It is a self number, because there is not a number n which added to its sum of digits gives 28980798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28980799) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68628 + ... + 69048.

It is an arithmetic number, because the mean of its divisors is an integer number (1139400).

Almost surely, 2^28980798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28980798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36460800).

28980798 is an abundant number, since it is smaller than the sum of its proper divisors (43940802).

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

28980798 is a wasteful number, since it uses less digits than its factorization.

28980798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593.

The product of its (nonzero) digits is 580608, while the sum is 51.

The square root of 28980798 is about 5383.3816509700. The cubic root of 28980798 is about 307.1638576797.

The spelling of 28980798 in words is "twenty-eight million, nine hundred eighty thousand, seven hundred ninety-eight".