28880360 has 32 divisors (see below), whose sum is σ = 65356200. Its totient is φ = 11485440.

The previous prime is 28880353. The next prime is 28880381. The reversal of 28880360 is 6308882.

It can be written as a sum of positive squares in 4 ways, for example, as 13498276 + 15382084 = 3674^2 + 3922^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28880360.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5246 + ... + 9234.

Almost surely, 2^28880360 is an apocalyptic number.

28880360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28880360 is an abundant number, since it is smaller than the sum of its proper divisors (36475840).

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

28880360 is a wasteful number, since it uses less digits than its factorization.

28880360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181 (or 4177 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 28880360 is about 5374.0450314451. The cubic root of 28880360 is about 306.8086036932.

The spelling of 28880360 in words is "twenty-eight million, eight hundred eighty thousand, three hundred sixty".