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2215388085 = 35147692539
BaseRepresentation
bin1000010000001100…
…0010001110110101
312201101122101010120
42010003002032311
514014114404320
61003455242153
7105620326251
oct20403021665
95641571116
102215388085
11a3758a949
12519b19359
13293c8b831
14170325261
15ce75b440
hex840c23b5

2215388085 has 8 divisors (see below), whose sum is σ = 3544620960. Its totient is φ = 1181540304.

The previous prime is 2215388051. The next prime is 2215388177. The reversal of 2215388085 is 5808835122.

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

It is not a de Polignac number, because 2215388085 - 214 = 2215371701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73846255 + ... + 73846284.

It is an arithmetic number, because the mean of its divisors is an integer number (443077620).

Almost surely, 22215388085 is an apocalyptic number.

It is an amenable number.

2215388085 is a deficient number, since it is larger than the sum of its proper divisors (1329232875).

2215388085 is a wasteful number, since it uses less digits than its factorization.

2215388085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147692547.

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 2215388085 is about 47067.9092907259. The cubic root of 2215388085 is about 1303.6167695666.

The spelling of 2215388085 in words is "two billion, two hundred fifteen million, three hundred eighty-eight thousand, eighty-five".

Divisors: 1 3 5 15 147692539 443077617 738462695 2215388085