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1987214 = 21994993
BaseRepresentation
bin111100101001010001110
310201221221112
413211022032
51002042324
6110332022
722614425
oct7451216
93657845
101987214
111138029
127ba012
13547688
1439a2bc
15293c0e
hex1e528e

1987214 has 8 divisors (see below), whose sum is σ = 2996400. Its totient is φ = 988416.

The previous prime is 1987201. The next prime is 1987217. The reversal of 1987214 is 4127891.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987217) 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, 2099 + ... + 2894.

It is an arithmetic number, because the mean of its divisors is an integer number (374550).

21987214 is an apocalyptic number.

1987214 is a deficient number, since it is larger than the sum of its proper divisors (1009186).

1987214 is a wasteful number, since it uses less digits than its factorization.

1987214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194.

The product of its digits is 4032, while the sum is 32.

The square root of 1987214 is about 1409.6857805908. The cubic root of 1987214 is about 125.7230416225.

The spelling of 1987214 in words is "one million, nine hundred eighty-seven thousand, two hundred fourteen".

Divisors: 1 2 199 398 4993 9986 993607 1987214