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30285354053 = 89340284877
BaseRepresentation
bin11100001101001001…
…011101010001000101
32220011122020101112202
4130031021131101011
5444011022312203
621525104124245
72121333155603
oct341511352105
986148211482
1030285354053
1111931324829
125a52606685
132b18535756
1416742c8873
15bc3be3388
hex70d25d445

30285354053 has 4 divisors (see below), whose sum is σ = 30625639020. Its totient is φ = 29945069088.

The previous prime is 30285354049. The next prime is 30285354083. The reversal of 30285354053 is 35045358203.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16908581089 + 13376772964 = 130033^2 + 115658^2 .

It is a cyclic number.

It is not a de Polignac number, because 30285354053 - 22 = 30285354049 is a prime.

It is a super-3 number, since 3×302853540533 (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30285353998 and 30285354016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30285354083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170142350 + ... + 170142527.

It is an arithmetic number, because the mean of its divisors is an integer number (7656409755).

Almost surely, 230285354053 is an apocalyptic number.

It is an amenable number.

30285354053 is a deficient number, since it is larger than the sum of its proper divisors (340284967).

30285354053 is an equidigital number, since it uses as much as digits as its factorization.

30285354053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340284966.

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 30285354053 in words is "thirty billion, two hundred eighty-five million, three hundred fifty-four thousand, fifty-three".

Divisors: 1 89 340284877 30285354053