28615200 has 72 divisors (see below), whose sum is σ = 93150288. Its totient is φ = 7630080.

The previous prime is 28615193. The next prime is 28615207. The reversal of 28615200 is 251682.

It is an interprime number because it is at equal distance from previous prime (28615193) and next prime (28615207).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (28615207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3562 + ... + 8361.

It is an arithmetic number, because the mean of its divisors is an integer number (1293754).

Almost surely, 2^28615200 is an apocalyptic number.

28615200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28615200 is an abundant number, since it is smaller than the sum of its proper divisors (64535088).

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

28615200 is a wasteful number, since it uses less digits than its factorization.

28615200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11946 (or 11933 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 28615200 is about 5349.3177135033. The cubic root of 28615200 is about 305.8667453459.

Adding to 28615200 its reverse (251682), we get a palindrome (28866882).

The spelling of 28615200 in words is "twenty-eight million, six hundred fifteen thousand, two hundred".