28887200 has 36 divisors (see below), whose sum is σ = 70522830. Its totient is φ = 11554560.

The previous prime is 28887193. The next prime is 28887211. The reversal of 28887200 is 278882.

It can be written as a sum of positive squares in 3 ways, for example, as 28174864 + 712336 = 5308^2 + 844^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17255 + ... + 18854.

Almost surely, 2^28887200 is an apocalyptic number.

28887200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28887200 is an abundant number, since it is smaller than the sum of its proper divisors (41635630).

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

28887200 is a wasteful number, since it uses less digits than its factorization.

28887200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36129 (or 36116 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 28887200 is about 5374.6813859056. The cubic root of 28887200 is about 306.8328232112.

It can be divided in two parts, 2888 and 7200, that multiplied together give a square (20793600 = 4560²).

The spelling of 28887200 in words is "twenty-eight million, eight hundred eighty-seven thousand, two hundred".