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30833798709 = 371977277691
BaseRepresentation
bin11100101101110101…
…100110111000110101
32221120212020021011210
4130231311212320311
51001121423024314
622055335152033
72141042651610
oct345565467065
987525207153
1030833798709
111209296a37a
125b86215619
132ba505000c
1416c7091177
15c06e2a559
hex72dd66e35

30833798709 has 16 divisors (see below), whose sum is σ = 49457722880. Its totient is φ = 16691981040.

The previous prime is 30833798651. The next prime is 30833798719. The reversal of 30833798709 is 90789733803.

It is not a de Polignac number, because 30833798709 - 27 = 30833798581 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30833798719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38638447 + ... + 38639244.

It is an arithmetic number, because the mean of its divisors is an integer number (3091107680).

Almost surely, 230833798709 is an apocalyptic number.

It is an amenable number.

30833798709 is a deficient number, since it is larger than the sum of its proper divisors (18623924171).

30833798709 is a wasteful number, since it uses less digits than its factorization.

30833798709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77277720.

The product of its (nonzero) digits is 6858432, while the sum is 57.

The spelling of 30833798709 in words is "thirty billion, eight hundred thirty-three million, seven hundred ninety-eight thousand, seven hundred nine".

Divisors: 1 3 7 19 21 57 133 399 77277691 231833073 540943837 1468276129 1622831511 4404828387 10277932903 30833798709