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30420344024 = 2371793034751
BaseRepresentation
bin11100010101001100…
…011001110011011000
32220112001020120222022
4130111030121303120
5444300102002044
621550325314012
72124562441430
oct342514316330
986461216868
1030420344024
11119a0544794
125a8b865908
132b3a4aa585
1416881c72c0
15bd09aa3ee
hex715319cd8

30420344024 has 32 divisors (see below), whose sum is σ = 65550643200. Its totient is φ = 12964452000.

The previous prime is 30420343999. The next prime is 30420344039. The reversal of 30420344024 is 42044302403.

It is a junction number, because it is equal to n+sod(n) for n = 30420343984 and 30420344002.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1507352 + ... + 1527399.

It is an arithmetic number, because the mean of its divisors is an integer number (2048457600).

Almost surely, 230420344024 is an apocalyptic number.

It is an amenable number.

30420344024 is an abundant number, since it is smaller than the sum of its proper divisors (35130299176).

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

30420344024 is a wasteful number, since it uses less digits than its factorization.

30420344024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3034943 (or 3034939 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 30420344024 its reverse (42044302403), we get a palindrome (72464646427).

The spelling of 30420344024 in words is "thirty billion, four hundred twenty million, three hundred forty-four thousand, twenty-four".

Divisors: 1 2 4 7 8 14 28 56 179 358 716 1253 1432 2506 5012 10024 3034751 6069502 12139004 21243257 24278008 42486514 84973028 169946056 543220429 1086440858 2172881716 3802543003 4345763432 7605086006 15210172012 30420344024