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30825000471 = 310275000157
BaseRepresentation
bin11100101101010100…
…000010111000010111
32221120020200021021010
4130231110002320113
51001112200003341
622054422423303
72140605116016
oct345524027027
987506607233
1030825000471
1112088a00101
125b83291b33
132ba328c465
1416c5c40a7d
15c0628d716
hex72d502e17

30825000471 has 4 divisors (see below), whose sum is σ = 41100000632. Its totient is φ = 20550000312.

The previous prime is 30825000299. The next prime is 30825000487. The reversal of 30825000471 is 17400052803.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30825000471 - 215 = 30824967703 is a prime.

It is a super-3 number, since 3×308250004713 (a number of 32 digits) contains 333 as substring.

It is the 175571-st Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30825004471) by changing a digit.

It is a nontrivial repunit in base 175570.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5137500076 + ... + 5137500081.

It is an arithmetic number, because the mean of its divisors is an integer number (10275000158).

Almost surely, 230825000471 is an apocalyptic number.

30825000471 is a deficient number, since it is larger than the sum of its proper divisors (10275000161).

30825000471 is a wasteful number, since it uses less digits than its factorization.

30825000471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10275000160.

The product of its (nonzero) digits is 6720, while the sum is 30.

The spelling of 30825000471 in words is "thirty billion, eight hundred twenty-five million, four hundred seventy-one", and thus it is an aban number.

Divisors: 1 3 10275000157 30825000471