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30082517 = 37813041
BaseRepresentation
bin111001011000…
…0010111010101
32002121100110022
41302300113111
530200120032
62552434525
7513461063
oct162602725
962540408
1030082517
1115a87493
12a0a8a45
13630370a
143dd1033
152993512
hex1cb05d5

30082517 has 4 divisors (see below), whose sum is σ = 30895596. Its totient is φ = 29269440.

The previous prime is 30082463. The next prime is 30082523. The reversal of 30082517 is 71528003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71528003 = 434916447.

It can be written as a sum of positive squares in 2 ways, for example, as 23902321 + 6180196 = 4889^2 + 2486^2 .

It is a cyclic number.

It is not a de Polignac number, because 30082517 - 212 = 30078421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30082417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406484 + ... + 406557.

It is an arithmetic number, because the mean of its divisors is an integer number (7723899).

Almost surely, 230082517 is an apocalyptic number.

30082517 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

30082517 is a deficient number, since it is larger than the sum of its proper divisors (813079).

30082517 is an equidigital number, since it uses as much as digits as its factorization.

30082517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813078.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 30082517 is about 5484.7531393856. The cubic root of 30082517 is about 311.0078781309.

The spelling of 30082517 in words is "thirty million, eighty-two thousand, five hundred seventeen".

Divisors: 1 37 813041 30082517