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2105030670 = 235891136977
BaseRepresentation
bin111110101111000…
…0011100000001110
312102200222122012220
41331132003200032
513302341440140
6544514040210
7103110315441
oct17536034016
95380878186
102105030670
11990264776
124a8b79066
1327715c8a2
1415d7d9658
15c4c0cbd0
hex7d78380e

2105030670 has 64 divisors (see below), whose sum is σ = 5154788160. Its totient is φ = 550043648.

The previous prime is 2105030657. The next prime is 2105030699. The reversal of 2105030670 is 760305012.

It is a self number, because there is not a number n which added to its sum of digits gives 2105030670.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 298222 + ... + 305198.

It is an arithmetic number, because the mean of its divisors is an integer number (80543565).

Almost surely, 22105030670 is an apocalyptic number.

2105030670 is an abundant number, since it is smaller than the sum of its proper divisors (3049757490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2105030670 is a wasteful number, since it uses less digits than its factorization.

2105030670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7189.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 2105030670 is about 45880.6132260675. The cubic root of 2105030670 is about 1281.6009163886.

Adding to 2105030670 its reverse (760305012), we get a palindrome (2865335682).

The spelling of 2105030670 in words is "two billion, one hundred five million, thirty thousand, six hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 89 113 178 226 267 339 445 534 565 678 890 1130 1335 1695 2670 3390 6977 10057 13954 20114 20931 30171 34885 41862 50285 60342 69770 100570 104655 150855 209310 301710 620953 788401 1241906 1576802 1862859 2365203 3104765 3725718 3942005 4730406 6209530 7884010 9314295 11826015 18628590 23652030 70167689 140335378 210503067 350838445 421006134 701676890 1052515335 2105030670