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18214233 = 329209359
BaseRepresentation
bin100010101111…
…0110101011001
31021021101020020
41011132311121
514130323413
61450221053
7310550502
oct105366531
937241206
1018214233
11a310694
126124789
133a0966b
1425c1ba9
1518ebc23
hex115ed59

18214233 has 8 divisors (see below), whose sum is σ = 25123200. Its totient is φ = 11724048.

The previous prime is 18214223. The next prime is 18214237. The reversal of 18214233 is 33241281.

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

It is not a de Polignac number, because 18214233 - 25 = 18214201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18214237) 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, 104593 + ... + 104766.

It is an arithmetic number, because the mean of its divisors is an integer number (3140400).

Almost surely, 218214233 is an apocalyptic number.

It is an amenable number.

18214233 is a deficient number, since it is larger than the sum of its proper divisors (6908967).

18214233 is a wasteful number, since it uses less digits than its factorization.

18214233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209391.

The product of its digits is 1152, while the sum is 24.

The square root of 18214233 is about 4267.8136088634. The cubic root of 18214233 is about 263.1097625283.

The spelling of 18214233 in words is "eighteen million, two hundred fourteen thousand, two hundred thirty-three".

Divisors: 1 3 29 87 209359 628077 6071411 18214233