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90200006215 = 5112212374131
BaseRepresentation
bin101010000000001010…
…1101101111001000111
322121211012020002001221
41110000111231321013
52434212200144330
6105234243101211
76342145255024
oct1240025557107
9277735202057
1090200006215
1135287608790
1215593971807
1386763ac357
1445196c254b
15252dbd7b7a
hex150056de47

90200006215 has 16 divisors (see below), whose sum is σ = 118086938496. Its totient is φ = 65596154400.

The previous prime is 90200006213. The next prime is 90200006227. The reversal of 90200006215 is 51260000209.

It is not a de Polignac number, because 90200006215 - 21 = 90200006213 is a prime.

It is a super-2 number, since 2×902000062152 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90200006215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90200006213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1179700 + ... + 1253830.

It is an arithmetic number, because the mean of its divisors is an integer number (7380433656).

Almost surely, 290200006215 is an apocalyptic number.

90200006215 is a deficient number, since it is larger than the sum of its proper divisors (27886932281).

90200006215 is a wasteful number, since it uses less digits than its factorization.

90200006215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96270.

The product of its (nonzero) digits is 1080, while the sum is 25.

The spelling of 90200006215 in words is "ninety billion, two hundred million, six thousand, two hundred fifteen".

Divisors: 1 5 11 55 22123 74131 110615 243353 370655 815441 1216765 4077205 1640000113 8200000565 18040001243 90200006215