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30228000280 = 2352513010757
BaseRepresentation
bin11100001001101110…
…101010111000011000
32220000122022111221221
4130021232222320120
5443401332002110
621515254541424
72120035522462
oct341156527030
986018274857
1030228000280
1111901a11015
125a37367874
132b096a40ca
14166a839132
15bbdb647da
hex709baae18

30228000280 has 32 divisors (see below), whose sum is σ = 68283991440. Its totient is φ = 12043024000.

The previous prime is 30228000241. The next prime is 30228000281. The reversal of 30228000280 is 8200082203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30228000281) 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 7 ways as a sum of consecutive naturals, for example, 1495339 + ... + 1515418.

Almost surely, 230228000280 is an apocalyptic number.

It is an amenable number.

30228000280 is an abundant number, since it is smaller than the sum of its proper divisors (38055991160).

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

30228000280 is a wasteful number, since it uses less digits than its factorization.

30228000280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011019 (or 3011015 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 30228000280 its reverse (8200082203), we get a palindrome (38428082483).

The spelling of 30228000280 in words is "thirty billion, two hundred twenty-eight million, two hundred eighty", and thus it is an aban number.

Divisors: 1 2 4 5 8 10 20 40 251 502 1004 1255 2008 2510 5020 10040 3010757 6021514 12043028 15053785 24086056 30107570 60215140 120430280 755700007 1511400014 3022800028 3778500035 6045600056 7557000070 15114000140 30228000280