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18802027 = 31761797
BaseRepresentation
bin100011110111…
…0010101101011
31022101020112101
41013232111223
514303131102
61510554231
7315546256
oct107562553
938336471
1018802027
11a682272
126368977
133b8407a
1426d609d
1519b5e87
hex11ee56b

18802027 has 8 divisors (see below), whose sum is σ = 19458432. Its totient is φ = 18148800.

The previous prime is 18802019. The next prime is 18802033. The reversal of 18802027 is 72020881.

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 18802027 - 23 = 18802019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18801986 and 18802004.

It is not an unprimeable number, because it can be changed into a prime (18802057) 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, 23193 + ... + 23989.

It is an arithmetic number, because the mean of its divisors is an integer number (2432304).

Almost surely, 218802027 is an apocalyptic number.

18802027 is a deficient number, since it is larger than the sum of its proper divisors (656405).

18802027 is an equidigital number, since it uses as much as digits as its factorization.

18802027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 18802027 is about 4336.1304177804. The cubic root of 18802027 is about 265.9101350949.

The spelling of 18802027 in words is "eighteen million, eight hundred two thousand, twenty-seven".

Divisors: 1 31 761 797 23591 24707 606517 18802027