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30462215809 = 127239859967
BaseRepresentation
bin11100010111101100…
…001000011010000001
32220121222000220021011
4130113230020122001
5444341311401214
621554423000521
72125611363544
oct342754103201
986558026234
1030462215809
1111a12143673
125aa1899141
132b4607b08c
14168d9a685b
15bd44cbac4
hex717b08681

30462215809 has 4 divisors (see below), whose sum is σ = 30702075904. Its totient is φ = 30222355716.

The previous prime is 30462215783. The next prime is 30462215821. The reversal of 30462215809 is 90851226403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30462215809 - 27 = 30462215681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30462215009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119929857 + ... + 119930110.

It is an arithmetic number, because the mean of its divisors is an integer number (7675518976).

Almost surely, 230462215809 is an apocalyptic number.

It is an amenable number.

30462215809 is a deficient number, since it is larger than the sum of its proper divisors (239860095).

30462215809 is a wasteful number, since it uses less digits than its factorization.

30462215809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239860094.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 30462215809 in words is "thirty billion, four hundred sixty-two million, two hundred fifteen thousand, eight hundred nine".

Divisors: 1 127 239859967 30462215809