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30028571489 = 719101222133
BaseRepresentation
bin11011111101110101…
…111010001101100001
32212111202001111002102
4123331311322031201
5442444303241424
621443412300145
72112064434440
oct337565721541
985452044072
1030028571489
111180a389234
1259a0611655
132aa7289ac7
14164c164d57
15bab3be7ae
hex6fdd7a361

30028571489 has 24 divisors (see below), whose sum is σ = 36487456320. Its totient is φ = 24141585600.

The previous prime is 30028571483. The next prime is 30028571491. The reversal of 30028571489 is 98417582003.

It is a happy number.

It is not a de Polignac number, because 30028571489 - 224 = 30011794273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30028571483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1345667 + ... + 1367799.

It is an arithmetic number, because the mean of its divisors is an integer number (1520310680).

Almost surely, 230028571489 is an apocalyptic number.

It is an amenable number.

30028571489 is a deficient number, since it is larger than the sum of its proper divisors (6458884831).

30028571489 is a wasteful number, since it uses less digits than its factorization.

30028571489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22361 (or 22260 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 30028571489 in words is "thirty billion, twenty-eight million, five hundred seventy-one thousand, four hundred eighty-nine".

Divisors: 1 7 19 101 133 707 1919 10201 13433 22133 71407 154931 193819 420527 1356733 2235433 2943689 15648031 42473227 225778733 297312589 1580451131 4289795927 30028571489