28250760 has 64 divisors (see below), whose sum is σ = 86572800. Its totient is φ = 7371776.

The previous prime is 28250731. The next prime is 28250773. The reversal of 28250760 is 6705282.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3136 + ... + 8144.

It is an arithmetic number, because the mean of its divisors is an integer number (1352700).

Almost surely, 2^28250760 is an apocalyptic number.

28250760 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 28250760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43286400).

28250760 is an abundant number, since it is smaller than the sum of its proper divisors (58322040).

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

28250760 is a wasteful number, since it uses less digits than its factorization.

28250760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5070 (or 5066 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 28250760 is about 5315.1444006725. The cubic root of 28250760 is about 304.5626985787.

The spelling of 28250760 in words is "twenty-eight million, two hundred fifty thousand, seven hundred sixty".