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12432102100 = 22521120815431
BaseRepresentation
bin10111001010000001…
…01101001011010100
31012002102012012222221
423211000231023110
5200430104231400
65413343032124
7620036060425
oct134500551324
935072165887
1012432102100
1152aa663350
1224ab59b644
131231835b42
1485d17b64c
154cb675c1a
hex2e502d2d4

12432102100 has 72 divisors (see below), whose sum is σ = 29449740096. Its totient is φ = 4517760000.

The previous prime is 12432102077. The next prime is 12432102103. The reversal of 12432102100 is 120123421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12432102103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2286385 + ... + 2291815.

It is an arithmetic number, because the mean of its divisors is an integer number (409024168).

Almost surely, 212432102100 is an apocalyptic number.

12432102100 is a gapful number since it is divisible by the number (10) 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 12432102100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14724870048).

12432102100 is an abundant number, since it is smaller than the sum of its proper divisors (17017637996).

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

12432102100 is a wasteful number, since it uses less digits than its factorization.

12432102100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7537 (or 7530 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12432102100 its reverse (120123421), we get a palindrome (12552225521).

The spelling of 12432102100 in words is "twelve billion, four hundred thirty-two million, one hundred two thousand, one hundred".

Divisors: 1 2 4 5 10 11 20 22 25 44 50 55 100 110 220 275 550 1100 2081 4162 5431 8324 10405 10862 20810 21724 22891 27155 41620 45782 52025 54310 59741 91564 104050 108620 114455 119482 135775 208100 228910 238964 271550 298705 457820 543100 572275 597410 1144550 1194820 1493525 2289100 2987050 5974100 11301911 22603822 45207644 56509555 113019110 124321021 226038220 248642042 282547775 497284084 565095550 621605105 1130191100 1243210210 2486420420 3108025525 6216051050 12432102100