Search a number
-
+
28375200 = 2532527563
BaseRepresentation
bin110110000111…
…1100010100000
31222101121110100
41230033202200
524231001300
62452102400
7463120350
oct154174240
958347410
1028375200
1115020787
129604a00
135b56579
143aa8b60
152757700
hex1b0f8a0

28375200 has 216 divisors, whose sum is σ = 114555168. Its totient is φ = 6474240.

The previous prime is 28375183. The next prime is 28375201. The reversal of 28375200 is 257382.

It is not an unprimeable number, because it can be changed into a prime (28375201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 50119 + ... + 50681.

It is an arithmetic number, because the mean of its divisors is an integer number (530348).

Almost surely, 228375200 is an apocalyptic number.

28375200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28375200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57277584).

28375200 is an abundant number, since it is smaller than the sum of its proper divisors (86179968).

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

28375200 is a wasteful number, since it uses less digits than its factorization.

28375200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 28375200 is about 5326.8377110627. The cubic root of 28375200 is about 305.0092266312.

The spelling of 28375200 in words is "twenty-eight million, three hundred seventy-five thousand, two hundred".