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30030530280 = 23351971270327
BaseRepresentation
bin11011111101111101…
…011000011011101000
32212111212202000001020
4123331331120123220
5443000303432110
621443522252440
72112120203262
oct337575303350
985455660036
1030030530280
11118104a6973
1259a11b7120
132aa77c455a
14164c514b32
15bab659d70
hex6fdf586e8

30030530280 has 64 divisors (see below), whose sum is σ = 90548979840. Its totient is φ = 7967484672.

The previous prime is 30030530279. The next prime is 30030530281. The reversal of 30030530280 is 8203503003.

It is an interprime number because it is at equal distance from previous prime (30030530279) and next prime (30030530281).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 30030530280.

It is not an unprimeable number, because it can be changed into a prime (30030530281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 611524 + ... + 658803.

It is an arithmetic number, because the mean of its divisors is an integer number (1414827810).

Almost surely, 230030530280 is an apocalyptic number.

30030530280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30030530280 is an abundant number, since it is smaller than the sum of its proper divisors (60518449560).

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

30030530280 is a wasteful number, since it uses less digits than its factorization.

30030530280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270538 (or 1270534 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The spelling of 30030530280 in words is "thirty billion, thirty million, five hundred thirty thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 197 394 591 788 985 1182 1576 1970 2364 2955 3940 4728 5910 7880 11820 23640 1270327 2540654 3810981 5081308 6351635 7621962 10162616 12703270 15243924 19054905 25406540 30487848 38109810 50813080 76219620 152439240 250254419 500508838 750763257 1001017676 1251272095 1501526514 2002035352 2502544190 3003053028 3753816285 5005088380 6006106056 7507632570 10010176760 15015265140 30030530280