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10102219 = 16136263
BaseRepresentation
bin100110100010…
…010111001011
3201000020122021
4212202113023
510041232334
61000305311
7151603351
oct46422713
921006567
1010102219
11577aa46
123472237
13212925a
1414ad7d1
15d483b4
hex9a25cb

10102219 has 4 divisors (see below), whose sum is σ = 10110096. Its totient is φ = 10094344.

The previous prime is 10102207. The next prime is 10102289. The reversal of 10102219 is 91220101.

10102219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 91220101 = 713031443.

It is a cyclic number.

It is not a de Polignac number, because 10102219 - 217 = 9971147 is a prime.

It is a super-2 number, since 2×101022192 = 204109657447922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10102289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1519 + ... + 4744.

It is an arithmetic number, because the mean of its divisors is an integer number (2527524).

Almost surely, 210102219 is an apocalyptic number.

10102219 is a deficient number, since it is larger than the sum of its proper divisors (7877).

10102219 is an equidigital number, since it uses as much as digits as its factorization.

10102219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7876.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 10102219 is about 3178.3988107222. The cubic root of 10102219 is about 216.1750624105.

The spelling of 10102219 in words is "ten million, one hundred two thousand, two hundred nineteen".

Divisors: 1 1613 6263 10102219