28436280 has 64 divisors (see below), whose sum is σ = 89026560. Its totient is φ = 7252608.

The previous prime is 28436263. The next prime is 28436377. The reversal of 28436280 is 8263482.

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, 2392 + ... + 7911.

It is an arithmetic number, because the mean of its divisors is an integer number (1391040).

Almost surely, 2^28436280 is an apocalyptic number.

28436280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28436280 is an abundant number, since it is smaller than the sum of its proper divisors (60590280).

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

28436280 is a wasteful number, since it uses less digits than its factorization.

28436280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10340 (or 10336 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 28436280 is about 5332.5678617342. The cubic root of 28436280 is about 305.2279224408.

The spelling of 28436280 in words is "twenty-eight million, four hundred thirty-six thousand, two hundred eighty".