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2111211040 = 25513195069
BaseRepresentation
bin111110111010110…
…1000011000100000
312110010121122002111
41331311220120200
513310432223130
6545254325104
7103213666141
oct17565503040
95403548074
102111211040
119937a6114
124ab059794
13278514a03
14160567ac8
15c552e02a
hex7dd68620

2111211040 has 24 divisors (see below), whose sum is σ = 4987736460. Its totient is φ = 844484352.

The previous prime is 2111211031. The next prime is 2111211103. The reversal of 2111211040 is 401121112.

It can be written as a sum of positive squares in 2 ways, for example, as 1701067536 + 410143504 = 41244^2 + 20252^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2111211040.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6597375 + ... + 6597694.

Almost surely, 22111211040 is an apocalyptic number.

2111211040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111211040 is an abundant number, since it is smaller than the sum of its proper divisors (2876525420).

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

2111211040 is a wasteful number, since it uses less digits than its factorization.

2111211040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13195084 (or 13195076 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2111211040 is about 45947.9166012998. The cubic root of 2111211040 is about 1282.8539509716.

Adding to 2111211040 its reverse (401121112), we get a palindrome (2512332152).

The spelling of 2111211040 in words is "two billion, one hundred eleven million, two hundred eleven thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 13195069 26390138 52780276 65975345 105560552 131950690 211121104 263901380 422242208 527802760 1055605520 2111211040