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18960045 = 351397231
BaseRepresentation
bin100100001010…
…0111010101101
31022200021021220
41020110322231
514323210140
61514213553
7320105046
oct110247255
938607256
1018960045
11a77aa65
1264242b9
133c0ac80
1427378cd
1519e7bd0
hex1214ead

18960045 has 16 divisors (see below), whose sum is σ = 32669952. Its totient is φ = 9334080.

The previous prime is 18960037. The next prime is 18960047. The reversal of 18960045 is 54006981.

It is not a de Polignac number, because 18960045 - 23 = 18960037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18959988 and 18960015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18960047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48421 + ... + 48810.

It is an arithmetic number, because the mean of its divisors is an integer number (2041872).

Almost surely, 218960045 is an apocalyptic number.

18960045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18960045 is a deficient number, since it is larger than the sum of its proper divisors (13709907).

18960045 is a wasteful number, since it uses less digits than its factorization.

18960045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97252.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 18960045 is about 4354.3133787085. The cubic root of 18960045 is about 266.6529880136.

The spelling of 18960045 in words is "eighteen million, nine hundred sixty thousand, forty-five".

Divisors: 1 3 5 13 15 39 65 195 97231 291693 486155 1264003 1458465 3792009 6320015 18960045