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213848249390 = 25531073770909
BaseRepresentation
bin1100011100101001011…
…0010101010000101110
3202102222110012122100222
43013022112111100232
512000430122440030
6242123542051342
721310234061636
oct3071226252056
9672873178328
10213848249390
1182768841a06
1235541419b52
1317220368399
14a4c93756c6
1558690ce3e5
hex31ca59542e

213848249390 has 32 divisors (see below), whose sum is σ = 395855048160. Its totient is φ = 83140979584.

The previous prime is 213848249369. The next prime is 213848249411. The reversal of 213848249390 is 93942848312.

It is an interprime number because it is at equal distance from previous prime (213848249369) and next prime (213848249411).

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1828745 + ... + 1942164.

It is an arithmetic number, because the mean of its divisors is an integer number (12370470255).

Almost surely, 2213848249390 is an apocalyptic number.

213848249390 is a deficient number, since it is larger than the sum of its proper divisors (182006798770).

213848249390 is a wasteful number, since it uses less digits than its factorization.

213848249390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771076.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 213848249390 in words is "two hundred thirteen billion, eight hundred forty-eight million, two hundred forty-nine thousand, three hundred ninety".

Divisors: 1 2 5 10 53 106 107 214 265 530 535 1070 5671 11342 28355 56710 3770909 7541818 18854545 37709090 199858177 399716354 403487263 806974526 999290885 1998581770 2017436315 4034872630 21384824939 42769649878 106924124695 213848249390