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2113200405 = 325312236793
BaseRepresentation
bin111110111110100…
…1110000100010101
312110021100200222200
41331331032010111
513311434403110
6545405115113
7103236623061
oct17575160425
95407320880
102113200405
11994934818
124ab858a99
13278a60354
14160924aa1
15c57c36c0
hex7df4e115

2113200405 has 48 divisors (see below), whose sum is σ = 3798552576. Its totient is φ = 1085633280.

The previous prime is 2113200389. The next prime is 2113200409. The reversal of 2113200405 is 5040023112.

It is not a de Polignac number, because 2113200405 - 24 = 2113200389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113200409) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 307689 + ... + 314481.

It is an arithmetic number, because the mean of its divisors is an integer number (79136512).

Almost surely, 22113200405 is an apocalyptic number.

It is an amenable number.

2113200405 is a deficient number, since it is larger than the sum of its proper divisors (1685352171).

2113200405 is a wasteful number, since it uses less digits than its factorization.

2113200405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7058 (or 7055 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2113200405 is about 45969.5595475963. The cubic root of 2113200405 is about 1283.2567629958.

Adding to 2113200405 its reverse (5040023112), we get a palindrome (7153223517).

The spelling of 2113200405 in words is "two billion, one hundred thirteen million, two hundred thousand, four hundred five".

Divisors: 1 3 5 9 15 31 45 93 155 223 279 465 669 1115 1395 2007 3345 6793 6913 10035 20379 20739 33965 34565 61137 62217 101895 103695 210583 305685 311085 631749 1052915 1514839 1895247 3158745 4544517 7574195 9476235 13633551 22722585 46960009 68167755 140880027 234800045 422640081 704400135 2113200405