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30434247844 = 227111311716491
BaseRepresentation
bin11100010110000001…
…011100010010100100
32220120000101222102121
4130112001130102210
5444312131412334
621551543315324
72125121560360
oct342601342244
986500358377
1030434247844
11119a8380950
125a9444bb44
132b40337ca0
141689da62a0
15bd1d04db4
hex71605c4a4

30434247844 has 96 divisors (see below), whose sum is σ = 71581934592. Its totient is φ = 10934352000.

The previous prime is 30434247827. The next prime is 30434247919. The reversal of 30434247844 is 44874243403.

It is a self number, because there is not a number n which added to its sum of digits gives 30434247844.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4685439 + ... + 4691929.

It is an arithmetic number, because the mean of its divisors is an integer number (745645152).

Almost surely, 230434247844 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30434247844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35790967296).

30434247844 is an abundant number, since it is smaller than the sum of its proper divisors (41147686748).

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

30434247844 is a wasteful number, since it uses less digits than its factorization.

30434247844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7697 (or 7695 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 43.

The spelling of 30434247844 in words is "thirty billion, four hundred thirty-four million, two hundred forty-seven thousand, eight hundred forty-four".

Divisors: 1 2 4 7 11 13 14 22 26 28 44 52 77 91 143 154 182 286 308 364 572 1001 1171 2002 2342 4004 4684 6491 8197 12881 12982 15223 16394 25762 25964 30446 32788 45437 51524 60892 71401 84383 90167 90874 106561 142802 167453 168766 180334 181748 213122 285604 334906 337532 360668 426244 499807 590681 669812 928213 999614 1172171 1181362 1856426 1999228 2344342 2362724 3712852 4688684 6497491 7600961 12994982 15201922 25989964 30403844 53206727 83610571 98812493 106413454 167221142 197624986 212826908 334442284 395249972 585273997 691687451 1086937423 1170547994 1383374902 2173874846 2341095988 2766749804 4347749692 7608561961 15217123922 30434247844