28250080 has 48 divisors (see below), whose sum is σ = 67060224. Its totient is φ = 11246080.

The previous prime is 28250071. The next prime is 28250087. The reversal of 28250080 is 8005282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28250087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61050 + ... + 61510.

It is an arithmetic number, because the mean of its divisors is an integer number (1397088).

Almost surely, 2^28250080 is an apocalyptic number.

28250080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28250080 is an abundant number, since it is smaller than the sum of its proper divisors (38810144).

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

28250080 is a wasteful number, since it uses less digits than its factorization.

28250080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 28250080 is about 5315.0804321289. The cubic root of 28250080 is about 304.5602549360.

The spelling of 28250080 in words is "twenty-eight million, two hundred fifty thousand, eighty".