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30502505407 = 1121115238629
BaseRepresentation
bin11100011010000101…
…110100101110111111
32220201202211211012111
4130122011310232333
5444432120133112
622002422314451
72126611006123
oct343205645677
986652754174
1030502505407
1111a32961860
125ab3288a27
132b5151668a
141695093583
15bd7cd95a7
hex71a174bbf

30502505407 has 16 divisors (see below), whose sum is σ = 33458993280. Its totient is φ = 27576813600.

The previous prime is 30502505393. The next prime is 30502505461. The reversal of 30502505407 is 70450520503.

It is a cyclic number.

It is not a de Polignac number, because 30502505407 - 211 = 30502503359 is a prime.

It is a super-2 number, since 2×305025054072 (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 (30502505107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3530569 + ... + 3539197.

It is an arithmetic number, because the mean of its divisors is an integer number (2091187080).

Almost surely, 230502505407 is an apocalyptic number.

30502505407 is a deficient number, since it is larger than the sum of its proper divisors (2956487873).

30502505407 is a wasteful number, since it uses less digits than its factorization.

30502505407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10374.

The product of its (nonzero) digits is 21000, while the sum is 31.

The spelling of 30502505407 in words is "thirty billion, five hundred two million, five hundred five thousand, four hundred seven".

Divisors: 1 11 211 1523 2321 8629 16753 94919 321353 1820719 3534883 13141967 20027909 144561637 2772955037 30502505407