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30241061640 = 233459333661
BaseRepresentation
bin11100001010100000…
…011111101100001000
32220001112220002210000
4130022200133230020
5443413202433030
621520442523000
72120254532316
oct341240375410
986045802700
1030241061640
1111909322229
125a3b806460
132b0c2c821a
14166c4790b6
15bbed94860
hex70a81fb08

30241061640 has 80 divisors (see below), whose sum is σ = 101643579180. Its totient is φ = 8064282240.

The previous prime is 30241061633. The next prime is 30241061651. The reversal of 30241061640 is 4616014203.

30241061640 is a `hidden beast` number, since 3 + 0 + 2 + 4 + 1 + 0 + 616 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 30215478276 + 25583364 = 173826^2 + 5058^2 .

It is a super-2 number, since 2×302410616402 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4663591 + ... + 4670070.

Almost surely, 230241061640 is an apocalyptic number.

30241061640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30241061640 is an abundant number, since it is smaller than the sum of its proper divisors (71402517540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30241061640 is a wasteful number, since it uses less digits than its factorization.

30241061640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9333684 (or 9333671 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 30241061640 its reverse (4616014203), we get a palindrome (34857075843).

The spelling of 30241061640 in words is "thirty billion, two hundred forty-one million, sixty-one thousand, six hundred forty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 45 54 60 72 81 90 108 120 135 162 180 216 270 324 360 405 540 648 810 1080 1620 3240 9333661 18667322 28000983 37334644 46668305 56001966 74669288 84002949 93336610 112003932 140004915 168005898 186673220 224007864 252008847 280009830 336011796 373346440 420014745 504017694 560019660 672023592 756026541 840029490 1008035388 1120039320 1260044235 1512053082 1680058980 2016070776 2520088470 3024106164 3360117960 3780132705 5040176940 6048212328 7560265410 10080353880 15120530820 30241061640