Search a number
-
+
230290887 = 3198348677
BaseRepresentation
bin11011011100111…
…11010111000111
3121001022222201010
431232133113013
5432423302022
634503533303
75464304001
oct1556372707
9531288633
10230290887
11108aa1a52
126515a233
13389317c8
1422829371
151533e50c
hexdb9f5c7

230290887 has 16 divisors (see below), whose sum is σ = 327116160. Its totient is φ = 143691552.

The previous prime is 230290877. The next prime is 230290889. The reversal of 230290887 is 788092032.

It is not a de Polignac number, because 230290887 - 219 = 229766599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230290889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19608 + ... + 29069.

It is an arithmetic number, because the mean of its divisors is an integer number (20444760).

Almost surely, 2230290887 is an apocalyptic number.

230290887 is a deficient number, since it is larger than the sum of its proper divisors (96825273).

230290887 is a wasteful number, since it uses less digits than its factorization.

230290887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48782.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 230290887 is about 15175.3381181442. The cubic root of 230290887 is about 612.9507547992.

The spelling of 230290887 in words is "two hundred thirty million, two hundred ninety thousand, eight hundred eighty-seven".

Divisors: 1 3 19 57 83 249 1577 4731 48677 146031 924863 2774589 4040191 12120573 76763629 230290887