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30438091269 = 32171217163469
BaseRepresentation
bin11100010110010000…
…000110101000000101
32220120021122020121200
4130112100012220011
5444314122410034
621552201533113
72125166335605
oct342620065005
986507566550
1030438091269
11119aa566533
125a957a4199
132b410824c1
14168a6c6c05
15bd2313a99
hex716406a05

30438091269 has 24 divisors (see below), whose sum is σ = 46590911640. Its totient is φ = 19082600448.

The previous prime is 30438091267. The next prime is 30438091291. The reversal of 30438091269 is 96219083403.

It is a happy number.

30438091269 is a `hidden beast` number, since 3 + 0 + 4 + 380 + 9 + 1 + 269 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5391230625 + 25046860644 = 73425^2 + 158262^2 .

It is not a de Polignac number, because 30438091269 - 21 = 30438091267 is a prime.

It is a super-2 number, since 2×304380912692 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30438091267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104467 + ... + 267935.

It is an arithmetic number, because the mean of its divisors is an integer number (1941287985).

Almost surely, 230438091269 is an apocalyptic number.

It is an amenable number.

30438091269 is a deficient number, since it is larger than the sum of its proper divisors (16152820371).

30438091269 is a wasteful number, since it uses less digits than its factorization.

30438091269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164709 (or 164706 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 30438091269 in words is "thirty billion, four hundred thirty-eight million, ninety-one thousand, two hundred sixty-nine".

Divisors: 1 3 9 17 51 153 1217 3651 10953 20689 62067 163469 186201 490407 1471221 2778973 8336919 25010757 198941773 596825319 1790475957 3382010141 10146030423 30438091269