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30141789 = 353293647
BaseRepresentation
bin111001011111…
…0110101011101
32002201100202120
41302332311131
530204014124
62554013153
7514125636
oct162766535
962640676
1030141789
1116017a77
12a1171b9
1363246a2
14400888d
1529a5d79
hex1cbed5d

30141789 has 16 divisors (see below), whose sum is σ = 41150592. Its totient is φ = 19617728.

The previous prime is 30141779. The next prime is 30141803. The reversal of 30141789 is 98714103.

It is a cyclic number.

It is not a de Polignac number, because 30141789 - 211 = 30139741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30141779) 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 15 ways as a sum of consecutive naturals, for example, 46264 + ... + 46910.

It is an arithmetic number, because the mean of its divisors is an integer number (2571912).

Almost surely, 230141789 is an apocalyptic number.

It is an amenable number.

30141789 is a deficient number, since it is larger than the sum of its proper divisors (11008803).

30141789 is a wasteful number, since it uses less digits than its factorization.

30141789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 30141789 is about 5490.1538229816. The cubic root of 30141789 is about 311.2120051684.

The spelling of 30141789 in words is "thirty million, one hundred forty-one thousand, seven hundred eighty-nine".

Divisors: 1 3 53 159 293 647 879 1941 15529 34291 46587 102873 189571 568713 10047263 30141789