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30010280 = 2357110567
BaseRepresentation
bin111001001111…
…0101110101000
32002110200100212
41302132232220
530140312110
62551120252
7513040346
oct162365650
962420325
1030010280
1115a38193
12a073088
1362a9881
143db2996
15297be05
hex1c9eba8

30010280 has 32 divisors (see below), whose sum is σ = 68480640. Its totient is φ = 11833920.

The previous prime is 30010241. The next prime is 30010297. The reversal of 30010280 is 8201003.

It is a super-4 number, since 4×300102804 (a number of 31 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2444 + ... + 8123.

It is an arithmetic number, because the mean of its divisors is an integer number (2140020).

Almost surely, 230010280 is an apocalyptic number.

It is an amenable number.

30010280 is an abundant number, since it is smaller than the sum of its proper divisors (38470360).

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

30010280 is a wasteful number, since it uses less digits than its factorization.

30010280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10649 (or 10645 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 30010280 is about 5478.1639259883. The cubic root of 30010280 is about 310.7587380424.

Adding to 30010280 its reverse (8201003), we get a palindrome (38211283).

The spelling of 30010280 in words is "thirty million, ten thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 71 142 284 355 568 710 1420 2840 10567 21134 42268 52835 84536 105670 211340 422680 750257 1500514 3001028 3751285 6002056 7502570 15005140 30010280