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30750248445 = 3572543115163
BaseRepresentation
bin11100101000110110…
…111000110111111101
32221101001000110202120
4130220312320313331
51000434030422240
622043152313153
72136006541050
oct345066706775
987331013676
1030750248445
111204a793874
125b622427b9
132b909489a7
1416b9d42a97
15bee924ad0
hex728db8dfd

30750248445 has 32 divisors (see below), whose sum is σ = 56251625472. Its totient is φ = 14051606592.

The previous prime is 30750248411. The next prime is 30750248449. The reversal of 30750248445 is 54484205703.

It is not a de Polignac number, because 30750248445 - 26 = 30750248381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30750248397 and 30750248406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30750248449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 209434 + ... + 324596.

It is an arithmetic number, because the mean of its divisors is an integer number (1757863296).

Almost surely, 230750248445 is an apocalyptic number.

30750248445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30750248445 is a deficient number, since it is larger than the sum of its proper divisors (25501377027).

30750248445 is a wasteful number, since it uses less digits than its factorization.

30750248445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117721.

The product of its (nonzero) digits is 537600, while the sum is 42.

The spelling of 30750248445 in words is "thirty billion, seven hundred fifty million, two hundred forty-eight thousand, four hundred forty-five".

Divisors: 1 3 5 7 15 21 35 105 2543 7629 12715 17801 38145 53403 89005 115163 267015 345489 575815 806141 1727445 2418423 4030705 12092115 292859509 878578527 1464297545 2050016563 4392892635 6150049689 10250082815 30750248445