Search a number
-
+
18876054256 = 243131992
BaseRepresentation
bin10001100101000110…
…011011101011110000
31210201111121220112121
4101211012123223300
5302124232214011
612401015204024
71235523546103
oct214506335360
953644556477
1018876054256
118007049a44
1237a9676614
131a1a891897
14cb0d1273a
15757254e71
hex46519baf0

18876054256 has 60 divisors (see below), whose sum is σ = 37982253504. Its totient is φ = 9087677280.

The previous prime is 18876054217. The next prime is 18876054259. The reversal of 18876054256 is 65245067881.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18876054259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94854445 + ... + 94854643.

Almost surely, 218876054256 is an apocalyptic number.

18876054256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18876054256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18991126752).

18876054256 is an abundant number, since it is smaller than the sum of its proper divisors (19106199248).

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

18876054256 is an frugal number, since it uses more digits than its factorization.

18876054256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 18876054256 in words is "eighteen billion, eight hundred seventy-six million, fifty-four thousand, two hundred fifty-six".

Divisors: 1 2 4 8 16 31 62 124 199 248 398 496 796 961 1592 1922 3184 3844 6169 7688 12338 15376 24676 29791 39601 49352 59582 79202 98704 119164 158404 191239 238328 316808 382478 476656 633616 764956 1227631 1529912 2455262 3059824 4910524 5928409 9821048 11856818 19642096 23713636 38056561 47427272 76113122 94854544 152226244 304452488 608904976 1179753391 2359506782 4719013564 9438027128 18876054256