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20010130030 = 25111391308707
BaseRepresentation
bin10010101000101100…
…100101101001101110
31220122112120221001001
4102220230211221232
5311440043130110
613105330310514
71305604204342
oct225054455156
956575527031
1020010130030
118539218950
123a6542843a
131b6b813737
14d7b7a1622
157c1abc63a
hex4a8b25a6e

20010130030 has 32 divisors (see below), whose sum is σ = 39575329920. Its totient is φ = 7224057120.

The previous prime is 20010130013. The next prime is 20010130031. The reversal of 20010130030 is 3003101002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20010129989 and 20010130016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010130031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 639064 + ... + 669643.

It is an arithmetic number, because the mean of its divisors is an integer number (1236729060).

Almost surely, 220010130030 is an apocalyptic number.

20010130030 is a deficient number, since it is larger than the sum of its proper divisors (19565199890).

20010130030 is a wasteful number, since it uses less digits than its factorization.

20010130030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308864.

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 20010130030 its reverse (3003101002), we get a palindrome (23013231032).

The spelling of 20010130030 in words is "twenty billion, ten million, one hundred thirty thousand, thirty".

Divisors: 1 2 5 10 11 22 55 110 139 278 695 1390 1529 3058 7645 15290 1308707 2617414 6543535 13087070 14395777 28791554 71978885 143957770 181910273 363820546 909551365 1819102730 2001013003 4002026006 10005065015 20010130030