Search a number
-
+
19125108 = 2232531253
BaseRepresentation
bin100100011110…
…1001101110100
31022222122201100
41020331031310
514344000413
61521530100
7321363222
oct110751564
938878640
1019125108
11a882a82
1264a3930
133c68142
14277bb12
151a2ba73
hex123d374

19125108 has 18 divisors (see below), whose sum is σ = 48344114. Its totient is φ = 6375024.

The previous prime is 19125101. The next prime is 19125131. The reversal of 19125108 is 80152191.

It can be written as a sum of positive squares in only one way, i.e., 11573604 + 7551504 = 3402^2 + 2748^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19125101) 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, 265591 + ... + 265662.

Almost surely, 219125108 is an apocalyptic number.

19125108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19125108 is an abundant number, since it is smaller than the sum of its proper divisors (29219006).

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

19125108 is a wasteful number, since it uses less digits than its factorization.

19125108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531263 (or 531258 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 19125108 is about 4373.2262690147. The cubic root of 19125108 is about 267.4245654475.

Adding to 19125108 its reverse (80152191), we get a palindrome (99277299).

The spelling of 19125108 in words is "nineteen million, one hundred twenty-five thousand, one hundred eight".

Divisors: 1 2 3 4 6 9 12 18 36 531253 1062506 1593759 2125012 3187518 4781277 6375036 9562554 19125108