28598780 has 48 divisors (see below), whose sum is σ = 70504896. Its totient is φ = 9538560.

The previous prime is 28598767. The next prime is 28598783. The reversal of 28598780 is 8789582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28598783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2420 + ... + 7940.

It is an arithmetic number, because the mean of its divisors is an integer number (1468852).

Almost surely, 2^28598780 is an apocalyptic number.

28598780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28598780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35252448).

28598780 is an abundant number, since it is smaller than the sum of its proper divisors (41906116).

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

28598780 is a wasteful number, since it uses less digits than its factorization.

28598780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5574 (or 5572 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 28598780 is about 5347.7827180992. The cubic root of 28598780 is about 305.8082299076.

The spelling of 28598780 in words is "twenty-eight million, five hundred ninety-eight thousand, seven hundred eighty".