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18054077 = 83217519
BaseRepresentation
bin100010011011…
…1101110111101
31020222020112112
41010313232331
514110212302
61442543405
7306312536
oct104675675
936866475
1018054077
11a211328
126067b65
1339817b2
14257d68d
1518b9552
hex1137bbd

18054077 has 4 divisors (see below), whose sum is σ = 18271680. Its totient is φ = 17836476.

The previous prime is 18054073. The next prime is 18054083. The reversal of 18054077 is 77045081.

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, and also an emirpimes, since its reverse is a distinct semiprime: 77045081 = 157490733.

It is a cyclic number.

It is not a de Polignac number, because 18054077 - 22 = 18054073 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18054073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108677 + ... + 108842.

It is an arithmetic number, because the mean of its divisors is an integer number (4567920).

Almost surely, 218054077 is an apocalyptic number.

It is an amenable number.

18054077 is a deficient number, since it is larger than the sum of its proper divisors (217603).

18054077 is an equidigital number, since it uses as much as digits as its factorization.

18054077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217602.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 18054077 is about 4249.0089432714. The cubic root of 18054077 is about 262.3363248743.

The spelling of 18054077 in words is "eighteen million, fifty-four thousand, seventy-seven".

Divisors: 1 83 217519 18054077