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1880231 = 14912619
BaseRepresentation
bin111001011000010100111
310112112012012
413023002213
5440131411
6104144435
721660503
oct7130247
93475165
101880231
111074711
1276811b
1350aa82
1436d303
1527218b
hex1cb0a7

1880231 has 4 divisors (see below), whose sum is σ = 1893000. Its totient is φ = 1867464.

The previous prime is 1880209. The next prime is 1880233. The reversal of 1880231 is 1320881.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1880231 - 26 = 1880167 is a prime.

It is a super-2 number, since 2×18802312 = 7070537226722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1880197 and 1880206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1880233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6161 + ... + 6458.

It is an arithmetic number, because the mean of its divisors is an integer number (473250).

21880231 is an apocalyptic number.

1880231 is a deficient number, since it is larger than the sum of its proper divisors (12769).

1880231 is a wasteful number, since it uses less digits than its factorization.

1880231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12768.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 1880231 is about 1371.2151545254. The cubic root of 1880231 is about 123.4251706213.

The spelling of 1880231 in words is "one million, eight hundred eighty thousand, two hundred thirty-one".

Divisors: 1 149 12619 1880231