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20123030130 = 235795823953
BaseRepresentation
bin10010101111011011…
…010001001001110010
31220221102000211212020
4102233123101021302
5312202443431010
613124442212310
71311444635220
oct225733211162
956842024766
1020123030130
118596a20415
123a971b4096
131b89022b28
14d8c78db10
157cb96e470
hex4af6d1272

20123030130 has 32 divisors (see below), whose sum is σ = 55194597504. Its totient is φ = 4599549696.

The previous prime is 20123030129. The next prime is 20123030173. The reversal of 20123030130 is 3103032102.

20123030130 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201230301302 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47911767 + ... + 47912186.

It is an arithmetic number, because the mean of its divisors is an integer number (1724831172).

Almost surely, 220123030130 is an apocalyptic number.

20123030130 is an abundant number, since it is smaller than the sum of its proper divisors (35071567374).

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

20123030130 is a wasteful number, since it uses less digits than its factorization.

20123030130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95823970.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20123030130 its reverse (3103032102), we get a palindrome (23226062232).

The spelling of 20123030130 in words is "twenty billion, one hundred twenty-three million, thirty thousand, one hundred thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 95823953 191647906 287471859 479119765 574943718 670767671 958239530 1341535342 1437359295 2012303013 2874718590 3353838355 4024606026 6707676710 10061515065 20123030130