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230500140 = 223513295513
BaseRepresentation
bin11011011110100…
…10011100101100
3121001201121202020
431233102130230
5433002001030
634512230140
75466135033
oct1557223454
9531647666
10230500140
11109125192
126523b350
13389a5b20
142288171a
1515381510
hexdbd272c

230500140 has 48 divisors (see below), whose sum is σ = 695048928. Its totient is φ = 56738304.

The previous prime is 230500129. The next prime is 230500177. The reversal of 230500140 is 41005032.

230500140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146977 + ... + 148536.

It is an arithmetic number, because the mean of its divisors is an integer number (14480186).

Almost surely, 2230500140 is an apocalyptic number.

230500140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230500140 is an abundant number, since it is smaller than the sum of its proper divisors (464548788).

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

230500140 is a wasteful number, since it uses less digits than its factorization.

230500140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295538 (or 295536 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 230500140 is about 15182.2310613427. The cubic root of 230500140 is about 613.1363504421.

Adding to 230500140 its reverse (41005032), we get a palindrome (271505172).

The spelling of 230500140 in words is "two hundred thirty million, five hundred thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 78 130 156 195 260 390 780 295513 591026 886539 1182052 1477565 1773078 2955130 3546156 3841669 4432695 5910260 7683338 8865390 11525007 15366676 17730780 19208345 23050014 38416690 46100028 57625035 76833380 115250070 230500140