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30241213040 = 245378015163
BaseRepresentation
bin11100001010100001…
…000100101001110000
32220001120011210110102
4130022201010221300
5443413222304130
621520450051532
72120256032603
oct341241045160
986046153412
1030241213040
1111909415a55
125a3b879ba8
132b0c34c0cc
14166c4b833a
15bbedc4645
hex70a844a70

30241213040 has 20 divisors (see below), whose sum is σ = 70310820504. Its totient is φ = 12096485184.

The previous prime is 30241213007. The next prime is 30241213043. The reversal of 30241213040 is 4031214203.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×302412130402 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30241213043) 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 3 ways as a sum of consecutive naturals, for example, 189007502 + ... + 189007661.

Almost surely, 230241213040 is an apocalyptic number.

It is an amenable number.

30241213040 is an abundant number, since it is smaller than the sum of its proper divisors (40069607464).

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

30241213040 is a wasteful number, since it uses less digits than its factorization.

30241213040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378015176 (or 378015170 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 30241213040 its reverse (4031214203), we get a palindrome (34272427243).

The spelling of 30241213040 in words is "thirty billion, two hundred forty-one million, two hundred thirteen thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 378015163 756030326 1512060652 1890075815 3024121304 3780151630 6048242608 7560303260 15120606520 30241213040