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30995022242 = 21244892
BaseRepresentation
bin11100110111011100…
…101000000110100010
32222000002121021021202
4130313130220012202
51001434211202432
622123334521202
72145041225222
oct346734500642
988002537252
1030995022242
1112165977a68
126010206202
132bcc57b662
14170065c082
15c16175462
hex7377281a2

30995022242 has 6 divisors (see below), whose sum is σ = 46492906833. Its totient is φ = 15497386632.

The previous prime is 30995022229. The next prime is 30995022257. The reversal of 30995022242 is 24222059903.

It can be written as a sum of positive squares in 2 ways, for example, as 24498823441 + 6496198801 = 156521^2 + 80599^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=124489.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30995022196 and 30995022205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 186734 + ... + 311222.

Almost surely, 230995022242 is an apocalyptic number.

30995022242 is a deficient number, since it is larger than the sum of its proper divisors (15497884591).

30995022242 is an frugal number, since it uses more digits than its factorization.

30995022242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248980 (or 124491 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 30995022242 in words is "thirty billion, nine hundred ninety-five million, twenty-two thousand, two hundred forty-two".

Divisors: 1 2 124489 248978 15497511121 30995022242