Search a number
-
+
20100132012 = 22312713189063
BaseRepresentation
bin10010101110000011…
…111010110010101100
31220212210221111112210
4102232003322302230
5312131113211022
613122303330420
71311046205652
oct225603726254
956783844483
1020100132012
118585000754
123a8b5b0a10
131b8436654c
14d8970cdd2
157c9949a0c
hex4ae0facac

20100132012 has 24 divisors (see below), whose sum is σ = 47269605376. Its totient is φ = 6647287248.

The previous prime is 20100132011. The next prime is 20100132037. The reversal of 20100132012 is 21023100102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20100132011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6593008 + ... + 6596055.

Almost surely, 220100132012 is an apocalyptic number.

It is an amenable number.

20100132012 is an abundant number, since it is smaller than the sum of its proper divisors (27169473364).

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

20100132012 is a wasteful number, since it uses less digits than its factorization.

20100132012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13189197 (or 13189195 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20100132012 its reverse (21023100102), we get a palindrome (41123232114).

The spelling of 20100132012 in words is "twenty billion, one hundred million, one hundred thirty-two thousand, twelve".

Divisors: 1 2 3 4 6 12 127 254 381 508 762 1524 13189063 26378126 39567189 52756252 79134378 158268756 1675011001 3350022002 5025033003 6700044004 10050066006 20100132012