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30246677081 = 132672279843
BaseRepresentation
bin11100001010110101…
…111010101001011001
32220001221110101201022
4130022311322221121
5443421122131311
621521203132225
72120353341005
oct341265725131
986057411638
1030246677081
1111911508195
125a41674075
132b1051317a
14166d0db705
15bc06035db
hex70ad7aa59

30246677081 has 4 divisors (see below), whose sum is σ = 30248970192. Its totient is φ = 30244383972.

The previous prime is 30246677057. The next prime is 30246677099. The reversal of 30246677081 is 18077664203.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18077664203 = 37488585519.

It is a cyclic number.

It is not a de Polignac number, because 30246677081 - 226 = 30179568217 is a prime.

It is a super-2 number, since 2×302466770812 (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 (30246677281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1126655 + ... + 1153188.

It is an arithmetic number, because the mean of its divisors is an integer number (7562242548).

Almost surely, 230246677081 is an apocalyptic number.

It is an amenable number.

30246677081 is a deficient number, since it is larger than the sum of its proper divisors (2293111).

30246677081 is a wasteful number, since it uses less digits than its factorization.

30246677081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293110.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 30246677081 in words is "thirty billion, two hundred forty-six million, six hundred seventy-seven thousand, eighty-one".

Divisors: 1 13267 2279843 30246677081