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107890 = 2510789
BaseRepresentation
bin11010010101110010
312110222221
4122111302
511423030
62151254
7626356
oct322562
9173887
10107890
1174072
125252a
133a153
142b466
1521e7a
hex1a572

107890 has 8 divisors (see below), whose sum is σ = 194220. Its totient is φ = 43152.

The previous prime is 107881. The next prime is 107897. The reversal of 107890 is 98701.

It can be written as a sum of positive squares in 2 ways, for example, as 106929 + 961 = 327^2 + 31^2 .

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

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (107897) by changing a digit.

107890 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5385 + ... + 5404.

2107890 is an apocalyptic number.

107890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

107890 is a deficient number, since it is larger than the sum of its proper divisors (86330).

107890 is a wasteful number, since it uses less digits than its factorization.

107890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10796.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 107890 is about 328.4661321963. The cubic root of 107890 is about 47.6058580931.

It can be divided in two parts, 1078 and 90, that multiplied together give a triangular number (97020 = T440).

The spelling of 107890 in words is "one hundred seven thousand, eight hundred ninety".

Divisors: 1 2 5 10 10789 21578 53945 107890