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30007917373 = 72612406477
BaseRepresentation
bin11011111100100111…
…000111101100111101
32212110022012010222011
4123330213013230331
5442424011323443
621441353451221
72111424042400
oct337447075475
985408163864
1030007917373
11117a9761515
125995710b11
132aa2c07a35
141649509d37
15ba968eb9d
hex6fc9c7b3d

30007917373 has 6 divisors (see below), whose sum is σ = 34907169246. Its totient is φ = 25721071992.

The previous prime is 30007917367. The next prime is 30007917389. The reversal of 30007917373 is 37371970003.

It can be written as a sum of positive squares in only one way, i.e., 18643717764 + 11364199609 = 136542^2 + 106603^2 .

It is a de Polignac number, because none of the positive numbers 2k-30007917373 is a prime.

It is a super-2 number, since 2×300079173732 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30007917073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 306203190 + ... + 306203287.

It is an arithmetic number, because the mean of its divisors is an integer number (5817861541).

Almost surely, 230007917373 is an apocalyptic number.

It is an amenable number.

30007917373 is a deficient number, since it is larger than the sum of its proper divisors (4899251873).

30007917373 is an equidigital number, since it uses as much as digits as its factorization.

30007917373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612406491 (or 612406484 counting only the distinct ones).

The product of its (nonzero) digits is 83349, while the sum is 40.

The spelling of 30007917373 in words is "thirty billion, seven million, nine hundred seventeen thousand, three hundred seventy-three".

Divisors: 1 7 49 612406477 4286845339 30007917373