Base | Representation |
---|---|
bin | 10101011100101110… |
… | …000000100110100000 |
3 | 2012110000202121112010 |
4 | 111130232000212200 |
5 | 334131240321230 |
6 | 14325141232520 |
7 | 1443500116344 |
oct | 253456004640 |
9 | 65400677463 |
10 | 23030401440 |
11 | 9849074522 |
12 | 4568a02740 |
13 | 2230474a97 |
14 | 1186963624 |
15 | 8ebd179b0 |
hex | 55cb809a0 |
23030401440 has 96 divisors (see below), whose sum is σ = 73075504320. Its totient is φ = 6096594944.
The previous prime is 23030401411. The next prime is 23030401463. The reversal of 23030401440 is 4410403032.
It is a tau number, because it is divible by the number of its divisors (96).
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109350 + ... + 240869.
It is an arithmetic number, because the mean of its divisors is an integer number (761203170).
Almost surely, 223030401440 is an apocalyptic number.
23030401440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
23030401440 is an abundant number, since it is smaller than the sum of its proper divisors (50045102880).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
23030401440 is a wasteful number, since it uses less digits than its factorization.
23030401440 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 350374 (or 350366 counting only the distinct ones).
The product of its (nonzero) digits is 1152, while the sum is 21.
Adding to 23030401440 its reverse (4410403032), we get a palindrome (27440804472).
The spelling of 23030401440 in words is "twenty-three billion, thirty million, four hundred one thousand, four hundred forty".
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