28150800 has 60 divisors (see below), whose sum is σ = 90180240. Its totient is φ = 7506560.

The previous prime is 28150777. The next prime is 28150807. The reversal of 28150800 is 805182.

It is a tau number, because it is divible by the number of its divisors (60).

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 (28150807) 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, 10530 + ... + 12929.

It is an arithmetic number, because the mean of its divisors is an integer number (1503004).

Almost surely, 2^28150800 is an apocalyptic number.

28150800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28150800 is an abundant number, since it is smaller than the sum of its proper divisors (62029440).

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

28150800 is a wasteful number, since it uses less digits than its factorization.

28150800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23480 (or 23469 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 28150800 is about 5305.7327486409. The cubic root of 28150800 is about 304.2030614694.

Adding to 28150800 its reverse (805182), we get a palindrome (28955982).

The spelling of 28150800 in words is "twenty-eight million, one hundred fifty thousand, eight hundred".