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30001008 = 2436171013
BaseRepresentation
bin111001001110…
…0011101110000
32002110012122110
41302130131300
530140013013
62551005320
7513001332
oct162343560
962405573
1030001008
1115a31224
12a069840
1362a559b
143dad452
1529792c3
hex1c9c770

30001008 has 40 divisors (see below), whose sum is σ = 77704848. Its totient is φ = 9974272.

The previous prime is 30001003. The next prime is 30001009. The reversal of 30001008 is 80010003.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 30000984 and 30001002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30001003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29110 + ... + 30122.

Almost surely, 230001008 is an apocalyptic number.

It is an amenable number.

30001008 is an abundant number, since it is smaller than the sum of its proper divisors (47703840).

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

30001008 is a wasteful number, since it uses less digits than its factorization.

30001008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641 (or 1635 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 30001008 is about 5477.3175916684. The cubic root of 30001008 is about 310.7267306568.

The spelling of 30001008 in words is "thirty million, one thousand, eight".

Divisors: 1 2 3 4 6 8 12 16 24 48 617 1013 1234 1851 2026 2468 3039 3702 4052 4936 6078 7404 8104 9872 12156 14808 16208 24312 29616 48624 625021 1250042 1875063 2500084 3750126 5000168 7500252 10000336 15000504 30001008