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30824939551 = 72691790947
BaseRepresentation
bin11100101101010011…
…110100000000011111
32221120020120011200211
4130231103310000133
51001112141031201
622054421233251
72140604443300
oct345523640037
987506504624
1030824939551
111208896935a
125b83262827
132ba326a803
1416c5c267a7
15c0627a651
hex72d4f401f

30824939551 has 12 divisors (see below), whose sum is σ = 35863161048. Its totient is φ = 26417266512.

The previous prime is 30824939539. The next prime is 30824939557. The reversal of 30824939551 is 15593942803.

It is not a de Polignac number, because 30824939551 - 221 = 30822842399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30824939495 and 30824939504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30824939557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 293460 + ... + 384406.

It is an arithmetic number, because the mean of its divisors is an integer number (2988596754).

Almost surely, 230824939551 is an apocalyptic number.

30824939551 is a deficient number, since it is larger than the sum of its proper divisors (5038221497).

30824939551 is an equidigital number, since it uses as much as digits as its factorization.

30824939551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97878 (or 97871 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 30824939551 in words is "thirty billion, eight hundred twenty-four million, nine hundred thirty-nine thousand, five hundred fifty-one".

Divisors: 1 7 49 6917 48419 90947 338933 636629 4456403 629080399 4403562793 30824939551