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230202140 = 22572516551
BaseRepresentation
bin11011011100010…
…01101100011100
3121001011110222012
431232021230130
5432412432030
634502010352
75463454160
oct1556115434
9531143865
10230202140
11108a41303
12651169b8
13389002ac
1422804ca0
1515323095
hexdb89b1c

230202140 has 48 divisors (see below), whose sum is σ = 554770944. Its totient is φ = 78600000.

The previous prime is 230202127. The next prime is 230202163. The reversal of 230202140 is 41202032.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

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, 31865 + ... + 38415.

It is an arithmetic number, because the mean of its divisors is an integer number (11557728).

Almost surely, 2230202140 is an apocalyptic number.

230202140 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 230202140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277385472).

230202140 is an abundant number, since it is smaller than the sum of its proper divisors (324568804).

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

230202140 is a wasteful number, since it uses less digits than its factorization.

230202140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6818 (or 6816 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 230202140 is about 15172.4137829154. The cubic root of 230202140 is about 612.8720072485.

Adding to 230202140 its reverse (41202032), we get a palindrome (271404172).

The spelling of 230202140 in words is "two hundred thirty million, two hundred two thousand, one hundred forty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 251 502 1004 1255 1757 2510 3514 5020 6551 7028 8785 13102 17570 26204 32755 35140 45857 65510 91714 131020 183428 229285 458570 917140 1644301 3288602 6577204 8221505 11510107 16443010 23020214 32886020 46040428 57550535 115101070 230202140