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18830697 = 318134679
BaseRepresentation
bin100011111010…
…1010101101001
31022102200212020
41013311111221
514310040242
61511335053
7316025664
oct107652551
938380766
1018830697
11a6a1866
126381489
133b94132
1427026db
1519be6ec
hex11f5569

18830697 has 8 divisors (see below), whose sum is σ = 25247040. Its totient is φ = 12484080.

The previous prime is 18830687. The next prime is 18830701. The reversal of 18830697 is 79603881.

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

It is not a de Polignac number, because 18830697 - 24 = 18830681 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18830687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16797 + ... + 17882.

It is an arithmetic number, because the mean of its divisors is an integer number (3155880).

Almost surely, 218830697 is an apocalyptic number.

It is an amenable number.

18830697 is a deficient number, since it is larger than the sum of its proper divisors (6416343).

18830697 is a wasteful number, since it uses less digits than its factorization.

18830697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34863.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 18830697 is about 4339.4351014850. The cubic root of 18830697 is about 266.0452228688.

The spelling of 18830697 in words is "eighteen million, eight hundred thirty thousand, six hundred ninety-seven".

Divisors: 1 3 181 543 34679 104037 6276899 18830697