Search a number
-
+
19228225 = 528772
BaseRepresentation
bin100100101011…
…0011001000001
31100011220011111
41021112121001
514410300400
61524043321
7322302652
oct111263101
940156144
1019228225
11a9434a5
126533541
133ca3063
1427a7529
151a4c3ba
hex1256641

19228225 has 9 divisors (see below), whose sum is σ = 23870217. Its totient is φ = 15365040.

The previous prime is 19228211. The next prime is 19228229. The reversal of 19228225 is 52282291.

The square root of 19228225 is 4385.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1046529 + 18181696 = 1023^2 + 4264^2 .

It is not a de Polignac number, because 19228225 - 29 = 19227713 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (19228229) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21487 + ... + 22363.

Almost surely, 219228225 is an apocalyptic number.

19228225 is the 4385-th square number.

19228225 is the 2193-rd centered octagonal number.

It is an amenable number.

19228225 is a deficient number, since it is larger than the sum of its proper divisors (4641992).

19228225 is an frugal number, since it uses more digits than its factorization.

19228225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764 (or 882 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The cubic root of 19228225 is about 267.9043292955.

The spelling of 19228225 in words is "nineteen million, two hundred twenty-eight thousand, two hundred twenty-five".

Divisors: 1 5 25 877 4385 21925 769129 3845645 19228225