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1987052160 = 273529127281
BaseRepresentation
bin111011001110000…
…0000001010000000
312010110222201010110
41312130000022000
513032141132120
6525101231320
7100145443662
oct16634001200
95113881113
101987052160
1192a703775
12475562540
13258892b12
1414bc88532
15b96a62e0
hex76700280

1987052160 has 256 divisors, whose sum is σ = 6627225600. Its totient is φ = 505774080.

The previous prime is 1987052153. The next prime is 1987052173. The reversal of 1987052160 is 612507891.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7071220 + ... + 7071500.

It is an arithmetic number, because the mean of its divisors is an integer number (25887600).

Almost surely, 21987052160 is an apocalyptic number.

1987052160 is a gapful number since it is divisible by the number (10) 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 1987052160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3313612800).

1987052160 is an abundant number, since it is smaller than the sum of its proper divisors (4640173440).

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

1987052160 is a wasteful number, since it uses less digits than its factorization.

1987052160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 39.

The square root of 1987052160 is about 44576.3632433154. The cubic root of 1987052160 is about 1257.1962854113.

The spelling of 1987052160 in words is "one billion, nine hundred eighty-seven million, fifty-two thousand, one hundred sixty".