28003260 has 48 divisors (see below), whose sum is σ = 79202592. Its totient is φ = 7392000.

The previous prime is 28003249. The next prime is 28003271. The reversal of 28003260 is 6230082.

It is an interprime number because it is at equal distance from previous prime (28003249) and next prime (28003271).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3750 + ... + 8370.

It is an arithmetic number, because the mean of its divisors is an integer number (1650054).

Almost surely, 2^28003260 is an apocalyptic number.

28003260 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 28003260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39601296).

28003260 is an abundant number, since it is smaller than the sum of its proper divisors (51199332).

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

28003260 is a wasteful number, since it uses less digits than its factorization.

28003260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4734 (or 4732 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 28003260 is about 5291.8106542090. The cubic root of 28003260 is about 303.6706815874.

The spelling of 28003260 in words is "twenty-eight million, three thousand, two hundred sixty".