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18830049 = 37896669
BaseRepresentation
bin100011111010…
…1001011100001
31022102122222020
41013311023201
514310030144
61511332053
7316024050
oct107651341
938378866
1018830049
11a6a1327
126381029
133b93a54
142702397
1519be419
hex11f52e1

18830049 has 8 divisors (see below), whose sum is σ = 28693440. Its totient is φ = 10760016.

The previous prime is 18830047. The next prime is 18830057. The reversal of 18830049 is 94003881.

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

It is not a de Polignac number, because 18830049 - 21 = 18830047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18830041) 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, 448314 + ... + 448355.

It is an arithmetic number, because the mean of its divisors is an integer number (3586680).

Almost surely, 218830049 is an apocalyptic number.

It is an amenable number.

18830049 is a deficient number, since it is larger than the sum of its proper divisors (9863391).

18830049 is an equidigital number, since it uses as much as digits as its factorization.

18830049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896679.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 18830049 is about 4339.3604367464. The cubic root of 18830049 is about 266.0421711269.

The spelling of 18830049 in words is "eighteen million, eight hundred thirty thousand, forty-nine".

Divisors: 1 3 7 21 896669 2690007 6276683 18830049