Search a number
-
+
21301341200 = 245253253353
BaseRepresentation
bin10011110101101010…
…001010110000010000
32000222112020020202222
4103311222022300100
5322111120404300
613441413400212
71352603261366
oct236552126020
960875206688
1021301341200
119041062a17
124165939068
132016192209
141061075636
1584a123785
hex4f5a8ac10

21301341200 has 30 divisors (see below), whose sum is σ = 51176473194. Its totient is φ = 8520536320.

The previous prime is 21301341157. The next prime is 21301341211. The reversal of 21301341200 is 214310312.

It can be written as a sum of positive squares in 3 ways, for example, as 6885016576 + 14416324624 = 82976^2 + 120068^2 .

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, 26626277 + ... + 26627076.

Almost surely, 221301341200 is an apocalyptic number.

21301341200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21301341200 is an abundant number, since it is smaller than the sum of its proper divisors (29875131994).

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

21301341200 is a wasteful number, since it uses less digits than its factorization.

21301341200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53253371 (or 53253360 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21301341200 its reverse (214310312), we get a palindrome (21515651512).

The spelling of 21301341200 in words is "twenty-one billion, three hundred one million, three hundred forty-one thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 200 400 53253353 106506706 213013412 266266765 426026824 532533530 852053648 1065067060 1331333825 2130134120 2662667650 4260268240 5325335300 10650670600 21301341200