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30000712 = 237535727
BaseRepresentation
bin111001001110…
…0011001001000
32002110012020111
41302130121020
530140010322
62551004104
7513000430
oct162343110
962405214
1030000712
1115a30a85
12a069634
1362a5401
143dad2c0
152979177
hex1c9c648

30000712 has 16 divisors (see below), whose sum is σ = 64287360. Its totient is φ = 12857424.

The previous prime is 30000689. The next prime is 30000721. The reversal of 30000712 is 21700003.

It is a junction number, because it is equal to n+sod(n) for n = 30000692 and 30000701.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267808 + ... + 267919.

It is an arithmetic number, because the mean of its divisors is an integer number (4017960).

Almost surely, 230000712 is an apocalyptic number.

It is an amenable number.

30000712 is an abundant number, since it is smaller than the sum of its proper divisors (34286648).

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

30000712 is a wasteful number, since it uses less digits than its factorization.

30000712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535740 (or 535736 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 30000712 is about 5477.2905710762. The cubic root of 30000712 is about 310.7257087421.

Adding to 30000712 its reverse (21700003), we get a palindrome (51700715).

The spelling of 30000712 in words is "thirty million, seven hundred twelve", and thus it is an aban number.

Divisors: 1 2 4 7 8 14 28 56 535727 1071454 2142908 3750089 4285816 7500178 15000356 30000712