Search a number
-
+
19280053 = 138291789
BaseRepresentation
bin100100110001…
…1000010110101
31100021112021001
41021203002311
514413430203
61525123301
7322610032
oct111430265
940245231
1019280053
11a979431
126559531
133cc0820
1427bc389
151a5c91d
hex12630b5

19280053 has 8 divisors (see below), whose sum is σ = 20799800. Its totient is φ = 17765568.

The previous prime is 19280017. The next prime is 19280059. The reversal of 19280053 is 35008291.

It can be written as a sum of positive squares in 4 ways, for example, as 4588164 + 14691889 = 2142^2 + 3833^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19280053 - 221 = 17182901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19280059) 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 7 ways as a sum of consecutive naturals, for example, 9883 + ... + 11671.

It is an arithmetic number, because the mean of its divisors is an integer number (2599975).

Almost surely, 219280053 is an apocalyptic number.

19280053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19280053 is a deficient number, since it is larger than the sum of its proper divisors (1519747).

19280053 is a wasteful number, since it uses less digits than its factorization.

19280053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 19280053 is about 4390.9057152255. The cubic root of 19280053 is about 268.1448175882.

The spelling of 19280053 in words is "nineteen million, two hundred eighty thousand, fifty-three".

Divisors: 1 13 829 1789 10777 23257 1483081 19280053