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30682293 = 310227431
BaseRepresentation
bin111010100001…
…0110010110101
32010201211012020
41311002302311
530323313133
63013343353
7521536515
oct165026265
963654166
1030682293
1116357074
12a337b59
136483705
144109845
152a610b3
hex1d42cb5

30682293 has 4 divisors (see below), whose sum is σ = 40909728. Its totient is φ = 20454860.

The previous prime is 30682279. The next prime is 30682303. The reversal of 30682293 is 39228603.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30682293 - 24 = 30682277 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30682243) 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, 5113713 + ... + 5113718.

It is an arithmetic number, because the mean of its divisors is an integer number (10227432).

Almost surely, 230682293 is an apocalyptic number.

It is an amenable number.

30682293 is a deficient number, since it is larger than the sum of its proper divisors (10227435).

30682293 is a wasteful number, since it uses less digits than its factorization.

30682293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10227434.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 30682293 is about 5539.1599543613. The cubic root of 30682293 is about 313.0612182789.

The spelling of 30682293 in words is "thirty million, six hundred eighty-two thousand, two hundred ninety-three".

Divisors: 1 3 10227431 30682293