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30087512945 = 575211649987
BaseRepresentation
bin11100000001010110…
…110000001101110001
32212122211222000120022
4130001112300031301
5443104400403240
621453315453225
72113411432430
oct340126601561
985584860508
1030087512945
111183a686886
1259b82b7215
132ab6555cc9
141655d09117
15bb16639b5
hex7015b0371

30087512945 has 16 divisors (see below), whose sum is σ = 41342099328. Its totient is φ = 20591825280.

The previous prime is 30087512921. The next prime is 30087512969. The reversal of 30087512945 is 54921578003.

It is an interprime number because it is at equal distance from previous prime (30087512921) and next prime (30087512969).

It is not a de Polignac number, because 30087512945 - 26 = 30087512881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30087512896 and 30087512905.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 806759 + ... + 843228.

It is an arithmetic number, because the mean of its divisors is an integer number (2583881208).

Almost surely, 230087512945 is an apocalyptic number.

30087512945 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30087512945 is a deficient number, since it is larger than the sum of its proper divisors (11254586383).

30087512945 is a wasteful number, since it uses less digits than its factorization.

30087512945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650520.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 30087512945 in words is "thirty billion, eighty-seven million, five hundred twelve thousand, nine hundred forty-five".

Divisors: 1 5 7 35 521 2605 3647 18235 1649987 8249935 11549909 57749545 859643227 4298216135 6017502589 30087512945