Search a number
-
+
231194880 = 2832574761
BaseRepresentation
bin11011100011111…
…00000100000000
3121010000220202100
431301330010000
5433141214010
634535150400
75505060360
oct1561740400
9533026670
10231194880
1110955a154
1265515400
1338b8a107
14229c29a0
151546c2c0
hexdc7c100

231194880 has 432 divisors, whose sum is σ = 948939264. Its totient is φ = 50872320.

The previous prime is 231194867. The next prime is 231194921. The reversal of 231194880 is 88491132.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 3790050 + ... + 3790110.

Almost surely, 2231194880 is an apocalyptic number.

231194880 is a gapful number since it is divisible by the number (20) 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 231194880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474469632).

231194880 is an abundant number, since it is smaller than the sum of its proper divisors (717744384).

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

231194880 is a wasteful number, since it uses less digits than its factorization.

231194880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 231194880 is about 15205.0938833011. The cubic root of 231194880 is about 613.7517413876.

The spelling of 231194880 in words is "two hundred thirty-one million, one hundred ninety-four thousand, eight hundred eighty".