[go: up one dir, main page]

Search a number
-
+
18979116 = 22313121661
BaseRepresentation
bin100100001100…
…1100100101100
31022201020110020
41020121210230
514324312431
61514442140
7320214462
oct110314454
938636406
1018979116
11a793322
126433350
133c16860
142740832
1519ed696
hex121992c

18979116 has 24 divisors (see below), whose sum is σ = 47691504. Its totient is φ = 5839680.

The previous prime is 18979111. The next prime is 18979127. The reversal of 18979116 is 61197981.

It is not an unprimeable number, because it can be changed into a prime (18979111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60675 + ... + 60986.

It is an arithmetic number, because the mean of its divisors is an integer number (1987146).

Almost surely, 218979116 is an apocalyptic number.

It is an amenable number.

18979116 is an abundant number, since it is smaller than the sum of its proper divisors (28712388).

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

18979116 is a wasteful number, since it uses less digits than its factorization.

18979116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121681 (or 121679 counting only the distinct ones).

The product of its digits is 27216, while the sum is 42.

The square root of 18979116 is about 4356.5027258112. The cubic root of 18979116 is about 266.7423625388.

The spelling of 18979116 in words is "eighteen million, nine hundred seventy-nine thousand, one hundred sixteen".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 121661 243322 364983 486644 729966 1459932 1581593 3163186 4744779 6326372 9489558 18979116