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2131930762 = 21381997337
BaseRepresentation
bin111111100010010…
…1010111010001010
312111120121022012121
41333010222322022
513331233241022
6551314401454
7103555053403
oct17704527212
95446538177
102131930762
119a4468155
124b5b9028a
1327c8ba8c0
141631dc9aa
15c72732c7
hex7f12ae8a

2131930762 has 8 divisors (see below), whose sum is σ = 3443888196. Its totient is φ = 983968032.

The previous prime is 2131930753. The next prime is 2131930769. The reversal of 2131930762 is 2670391312.

It can be written as a sum of positive squares in 2 ways, for example, as 2085840241 + 46090521 = 45671^2 + 6789^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2131930769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40998643 + ... + 40998694.

Almost surely, 22131930762 is an apocalyptic number.

2131930762 is a deficient number, since it is larger than the sum of its proper divisors (1311957434).

2131930762 is a wasteful number, since it uses less digits than its factorization.

2131930762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81997352.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 2131930762 is about 46172.8357587012. The cubic root of 2131930762 is about 1287.0369993471.

The spelling of 2131930762 in words is "two billion, one hundred thirty-one million, nine hundred thirty thousand, seven hundred sixty-two".

Divisors: 1 2 13 26 81997337 163994674 1065965381 2131930762