Search a number
-
+
20331000140 = 22511229403553
BaseRepresentation
bin10010111011110100…
…100111000101001100
31221110220100211002012
4102323310213011030
5313114214001030
613201231520352
71316551435613
oct227364470514
957426324065
1020331000140
118693357360
123b349890b8
131bc013a9c9
14dac24887a
157ded50095
hex4bbd2714c

20331000140 has 48 divisors (see below), whose sum is σ = 46779979680. Its totient is φ = 7360788480.

The previous prime is 20331000113. The next prime is 20331000149. The reversal of 20331000140 is 4100013302.

It is not an unprimeable number, because it can be changed into a prime (20331000149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151397 + ... + 252156.

It is an arithmetic number, because the mean of its divisors is an integer number (974582910).

Almost surely, 220331000140 is an apocalyptic number.

20331000140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20331000140 is an abundant number, since it is smaller than the sum of its proper divisors (26448979540).

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

20331000140 is a wasteful number, since it uses less digits than its factorization.

20331000140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403802 (or 403800 counting only the distinct ones).

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

Adding to 20331000140 its reverse (4100013302), we get a palindrome (24431013442).

The spelling of 20331000140 in words is "twenty billion, three hundred thirty-one million, one hundred forty", and thus it is an aban number.

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 229 458 916 1145 2290 2519 4580 5038 10076 12595 25190 50380 403553 807106 1614212 2017765 4035530 4439083 8071060 8878166 17756332 22195415 44390830 88781660 92413637 184827274 369654548 462068185 924136370 1016550007 1848272740 2033100014 4066200028 5082750035 10165500070 20331000140