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10142890 = 253132719
BaseRepresentation
bin100110101100…
…010010101010
3201002022102121
4212230102222
510044033030
61001221454
7152133052
oct46542252
921068377
1010142890
1157a855a
12349188a
132141914
1414c0562
15d5547a
hex9ac4aa

10142890 has 16 divisors (see below), whose sum is σ = 18846720. Its totient is φ = 3926160.

The previous prime is 10142887. The next prime is 10142893. The reversal of 10142890 is 9824101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10142887) and next prime (10142893).

It is not an unprimeable number, because it can be changed into a prime (10142893) 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 7 ways as a sum of consecutive naturals, for example, 16050 + ... + 16669.

It is an arithmetic number, because the mean of its divisors is an integer number (1177920).

Almost surely, 210142890 is an apocalyptic number.

10142890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10142890 is a deficient number, since it is larger than the sum of its proper divisors (8703830).

10142890 is a wasteful number, since it uses less digits than its factorization.

10142890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32757.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 10142890 is about 3184.7904169662. The cubic root of 10142890 is about 216.4647770926.

Adding to 10142890 its reverse (9824101), we get a palindrome (19966991).

The spelling of 10142890 in words is "ten million, one hundred forty-two thousand, eight hundred ninety".

Divisors: 1 2 5 10 31 62 155 310 32719 65438 163595 327190 1014289 2028578 5071445 10142890