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30420023422 = 2231369748281
BaseRepresentation
bin11100010101001011…
…001011100001111110
32220112000122022012011
4130111023023201332
5444300011222142
621550314401434
72124556634635
oct342513134176
986460568164
1030420023422
11119a0345928
125a8b73027a
132b3a3c7679
14168814251c
15bd0945417
hex7152cb87e

30420023422 has 16 divisors (see below), whose sum is σ = 47618412192. Its totient is φ = 14547343360.

The previous prime is 30420023407. The next prime is 30420023429. The reversal of 30420023422 is 22432002403.

It is a junction number, because it is equal to n+sod(n) for n = 30420023393 and 30420023402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420023429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605922 + ... + 654202.

It is an arithmetic number, because the mean of its divisors is an integer number (2976150762).

Almost surely, 230420023422 is an apocalyptic number.

30420023422 is a deficient number, since it is larger than the sum of its proper divisors (17198388770).

30420023422 is a wasteful number, since it uses less digits than its factorization.

30420023422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62003.

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 30420023422 its reverse (22432002403), we get a palindrome (52852025825).

The spelling of 30420023422 in words is "thirty billion, four hundred twenty million, twenty-three thousand, four hundred twenty-two".

Divisors: 1 2 23 46 13697 27394 48281 96562 315031 630062 1110463 2220926 661304857 1322609714 15210011711 30420023422