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18029137 = 713119661
BaseRepresentation
bin100010011000…
…1101001010001
31020220222022211
41010301221101
514103413022
61442232121
7306150040
oct104615121
936828284
1018029137
11a1a4615
126055641
133973339
142574557
1518b1e77
hex1131a51

18029137 has 8 divisors (see below), whose sum is σ = 20763072. Its totient is φ = 15334800.

The previous prime is 18029131. The next prime is 18029147. The reversal of 18029137 is 73192081.

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 18029137 - 27 = 18029009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18029099 and 18029108.

It is not an unprimeable number, because it can be changed into a prime (18029131) 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, 8914 + ... + 10747.

It is an arithmetic number, because the mean of its divisors is an integer number (2595384).

Almost surely, 218029137 is an apocalyptic number.

It is an amenable number.

18029137 is a deficient number, since it is larger than the sum of its proper divisors (2733935).

18029137 is a wasteful number, since it uses less digits than its factorization.

18029137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19799.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 18029137 is about 4246.0731270198. The cubic root of 18029137 is about 262.2154716002.

The spelling of 18029137 in words is "eighteen million, twenty-nine thousand, one hundred thirty-seven".

Divisors: 1 7 131 917 19661 137627 2575591 18029137