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30048857867 = 78999477019
BaseRepresentation
bin11011111111000011…
…010010111100001011
32212120011020010202202
4123333003102330023
5443020001422432
621445415150415
72112432035420
oct337703227413
985504203682
1030048857867
111181a884736
1259a737540b
132aab540692
141650b25d47
15bad07a462
hex6ff0d2f0b

30048857867 has 8 divisors (see below), whose sum is σ = 34345440000. Its totient is φ = 25753247784.

The previous prime is 30048857849. The next prime is 30048857879. The reversal of 30048857867 is 76875884003.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30048857867 - 28 = 30048857611 is a prime.

It is a super-2 number, since 2×300488578672 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30048857887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175517 + ... + 301502.

It is an arithmetic number, because the mean of its divisors is an integer number (4293180000).

Almost surely, 230048857867 is an apocalyptic number.

30048857867 is a deficient number, since it is larger than the sum of its proper divisors (4296582133).

30048857867 is an equidigital number, since it uses as much as digits as its factorization.

30048857867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486025.

The product of its (nonzero) digits is 9031680, while the sum is 56.

The spelling of 30048857867 in words is "thirty billion, forty-eight million, eight hundred fifty-seven thousand, eight hundred sixty-seven".

Divisors: 1 7 8999 62993 477019 3339133 4292693981 30048857867