28151600 has 30 divisors (see below), whose sum is σ = 67635180. Its totient is φ = 11260480.

The previous prime is 28151587. The next prime is 28151603. The reversal of 28151600 is 615182.

It is not an unprimeable number, because it can be changed into a prime (28151603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34790 + ... + 35589.

It is an arithmetic number, because the mean of its divisors is an integer number (2254506).

Almost surely, 2^28151600 is an apocalyptic number.

28151600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28151600 is an abundant number, since it is smaller than the sum of its proper divisors (39483580).

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

28151600 is a wasteful number, since it uses less digits than its factorization.

28151600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70397 (or 70386 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 28151600 is about 5305.8081382575. The cubic root of 28151600 is about 304.2059430943.

Adding to 28151600 its reverse (615182), we get a palindrome (28766782).

The spelling of 28151600 in words is "twenty-eight million, one hundred fifty-one thousand, six hundred".