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2069881407 = 321120907893
BaseRepresentation
bin111101101011111…
…1110001000111111
312100020211212111100
41323113332020333
513214342201112
6541220424143
7102202462446
oct17327761077
95306755440
102069881407
119724375a0
12499248053
1326caa3bc9
14158c89d5d
15c1ab82dc
hex7b5fe23f

2069881407 has 12 divisors (see below), whose sum is σ = 3261631464. Its totient is φ = 1254473520.

The previous prime is 2069881403. The next prime is 2069881447. The reversal of 2069881407 is 7041889602.

It is not a de Polignac number, because 2069881407 - 22 = 2069881403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2069881403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10453848 + ... + 10454045.

It is an arithmetic number, because the mean of its divisors is an integer number (271802622).

Almost surely, 22069881407 is an apocalyptic number.

2069881407 is a deficient number, since it is larger than the sum of its proper divisors (1191750057).

2069881407 is a wasteful number, since it uses less digits than its factorization.

2069881407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20907910 (or 20907907 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 2069881407 is about 45495.9493471672. The cubic root of 2069881407 is about 1274.4275594064.

The spelling of 2069881407 in words is "two billion, sixty-nine million, eight hundred eighty-one thousand, four hundred seven".

Divisors: 1 3 9 11 33 99 20907893 62723679 188171037 229986823 689960469 2069881407