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10440030020 = 225774571643
BaseRepresentation
bin10011011100100011…
…00011011101000100
3222221120202110211112
421232101203131010
5132340121430040
64443542024152
7516466535210
oct115621433504
928846673745
1010440030020
114478141092
122034418058
13ca4c06174
14710787940
1541182c365
hex26e463744

10440030020 has 24 divisors (see below), whose sum is σ = 25056072384. Its totient is φ = 3579438816.

The previous prime is 10440030019. The next prime is 10440030023. The reversal of 10440030020 is 2003004401.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 10440029977 and 10440030004.

It is not an unprimeable number, because it can be changed into a prime (10440030023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37285682 + ... + 37285961.

It is an arithmetic number, because the mean of its divisors is an integer number (1044003016).

Almost surely, 210440030020 is an apocalyptic number.

10440030020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10440030020 is an abundant number, since it is smaller than the sum of its proper divisors (14616042364).

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

10440030020 is a wasteful number, since it uses less digits than its factorization.

10440030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74571659 (or 74571657 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 10440030020 its reverse (2003004401), we get a palindrome (12443034421).

The spelling of 10440030020 in words is "ten billion, four hundred forty million, thirty thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 74571643 149143286 298286572 372858215 522001501 745716430 1044003002 1491432860 2088006004 2610007505 5220015010 10440030020