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30427546709 = 721069580889
BaseRepresentation
bin11100010101100111…
…111000010001010101
32220112112210112012102
4130111213320101111
5444303422443314
621551143531445
72125010610500
oct342547702125
986475715172
1030427546709
11119a461421a
125a92159b85
132b3bb2cb11
141689140137
15bd142e5de
hex7159f8455

30427546709 has 12 divisors (see below), whose sum is σ = 35428481100. Its totient is φ = 26056312128.

The previous prime is 30427546693. The next prime is 30427546711. The reversal of 30427546709 is 90764572403.

It can be written as a sum of positive squares in 2 ways, for example, as 4977725809 + 25449820900 = 70553^2 + 159530^2 .

It is not a de Polignac number, because 30427546709 - 24 = 30427546693 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 (30427546759) 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, 238064 + ... + 342825.

It is an arithmetic number, because the mean of its divisors is an integer number (2952373425).

Almost surely, 230427546709 is an apocalyptic number.

It is an amenable number.

30427546709 is a deficient number, since it is larger than the sum of its proper divisors (5000934391).

30427546709 is a wasteful number, since it uses less digits than its factorization.

30427546709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581972 (or 581965 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 30427546709 in words is "thirty billion, four hundred twenty-seven million, five hundred forty-six thousand, seven hundred nine".

Divisors: 1 7 49 1069 7483 52381 580889 4066223 28463561 620970341 4346792387 30427546709