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30081292975 = 523461334763
BaseRepresentation
bin11100000000111111…
…000001101010101111
32212122102021000101001
4130000333001222233
5443101302333400
621452534301131
72113304525416
oct340077015257
985572230331
1030081292975
1111837118708
1259b61b77a7
132ab5188b56
14165516a47d
15bb0d35a6a
hex700fc1aaf

30081292975 has 12 divisors (see below), whose sum is σ = 37302953976. Its totient is φ = 24063646880.

The previous prime is 30081292973. The next prime is 30081292987. The reversal of 30081292975 is 57929218003.

It is not a de Polignac number, because 30081292975 - 21 = 30081292973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30081292973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 847944 + ... + 882706.

It is an arithmetic number, because the mean of its divisors is an integer number (3108579498).

Almost surely, 230081292975 is an apocalyptic number.

30081292975 is a deficient number, since it is larger than the sum of its proper divisors (7221661001).

30081292975 is a wasteful number, since it uses less digits than its factorization.

30081292975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69386 (or 69381 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 30081292975 in words is "thirty billion, eighty-one million, two hundred ninety-two thousand, nine hundred seventy-five".

Divisors: 1 5 25 34613 34763 173065 173815 865325 869075 1203251719 6016258595 30081292975