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30868419 = 353194141
BaseRepresentation
bin111010111000…
…0001111000011
32011002021111210
41311300033003
530400242134
63021341203
7523243251
oct165601703
964067453
1030868419
111647399a
12a407803
13651a34a
1441575d1
152a9b2e9
hex1d703c3

30868419 has 8 divisors (see below), whose sum is σ = 41934672. Its totient is φ = 20190560.

The previous prime is 30868417. The next prime is 30868423. The reversal of 30868419 is 91486803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30868419 - 21 = 30868417 is a prime.

It is a super-2 number, since 2×308684192 = 1905718583119122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30868417) 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 7 ways as a sum of consecutive naturals, for example, 96912 + ... + 97229.

It is an arithmetic number, because the mean of its divisors is an integer number (5241834).

Almost surely, 230868419 is an apocalyptic number.

30868419 is a deficient number, since it is larger than the sum of its proper divisors (11066253).

30868419 is a wasteful number, since it uses less digits than its factorization.

30868419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194197.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 30868419 is about 5555.9354747873. The cubic root of 30868419 is about 313.6929768381.

The spelling of 30868419 in words is "thirty million, eight hundred sixty-eight thousand, four hundred nineteen".

Divisors: 1 3 53 159 194141 582423 10289473 30868419