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2141712720 = 2432572511693
BaseRepresentation
bin111111110100111…
…1111000101010000
312112021000021112100
41333221333011100
513341234301340
6552304200400
7104034154260
oct17751770520
95467007470
102141712720
119a9a39514
124b9309100
13281934144
141646277a0
15c8056830
hex7fa7f150

2141712720 has 240 divisors, whose sum is σ = 8257721472. Its totient is φ = 487296000.

The previous prime is 2141712691. The next prime is 2141712721. The reversal of 2141712720 is 272171412.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2141712721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1264194 + ... + 1265886.

Almost surely, 22141712720 is an apocalyptic number.

2141712720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2141712720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4128860736).

2141712720 is an abundant number, since it is smaller than the sum of its proper divisors (6116008752).

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

2141712720 is a wasteful number, since it uses less digits than its factorization.

2141712720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970 (or 1961 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 2141712720 is about 46278.6421581273. The cubic root of 2141712720 is about 1289.0024377216.

The spelling of 2141712720 in words is "two billion, one hundred forty-one million, seven hundred twelve thousand, seven hundred twenty".