28127300 has 18 divisors (see below), whose sum is σ = 61036458. Its totient is φ = 11250880.

The previous prime is 28127273. The next prime is 28127327. The reversal of 28127300 is 372182.

It is an interprime number because it is at equal distance from previous prime (28127273) and next prime (28127327).

It can be written as a sum of positive squares in 3 ways, for example, as 5924356 + 22202944 = 2434^2 + 4712^2 .

It is a super-2 number, since 2×28127300² = 1582290010580000, which contains 22 as substring.

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, 140537 + ... + 140736.

Almost surely, 2^28127300 is an apocalyptic number.

28127300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28127300 is an abundant number, since it is smaller than the sum of its proper divisors (32909158).

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

28127300 is a wasteful number, since it uses less digits than its factorization.

28127300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281287 (or 281280 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 28127300 is about 5303.5177005456. The cubic root of 28127300 is about 304.1183893688.

Adding to 28127300 its reverse (372182), we get a palindrome (28499482).

The spelling of 28127300 in words is "twenty-eight million, one hundred twenty-seven thousand, three hundred".