Search a number
-
+
12023031200 = 255215028789
BaseRepresentation
bin10110011001010000…
…01110010110100000
31011000220110021012212
423030220032112200
5144110343444300
65305011141252
7603641036045
oct131450162640
934026407185
1012023031200
11510a762324
1223b65a4828
131197b6985b
14820ad51cc
154a57be935
hex2cca0e5a0

12023031200 has 36 divisors (see below), whose sum is σ = 29351226870. Its totient is φ = 4809212160.

The previous prime is 12023031197. The next prime is 12023031217. The reversal of 12023031200 is 213032021.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10214740624 + 1808290576 = 101068^2 + 42524^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7513595 + ... + 7515194.

Almost surely, 212023031200 is an apocalyptic number.

12023031200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12023031200 is an abundant number, since it is smaller than the sum of its proper divisors (17328195670).

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

12023031200 is a wasteful number, since it uses less digits than its factorization.

12023031200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15028809 (or 15028796 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 12023031200 its reverse (213032021), we get a palindrome (12236063221).

The spelling of 12023031200 in words is "twelve billion, twenty-three million, thirty-one thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 160 200 400 800 15028789 30057578 60115156 75143945 120230312 150287890 240460624 300575780 375719725 480921248 601151560 751439450 1202303120 1502878900 2404606240 3005757800 6011515600 12023031200