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987871442 = 2518995189
BaseRepresentation
bin111010111000011…
…011100011010010
32112211212001212012
4322320123203102
54010343341232
6242005302522
733323524445
oct7270334322
92484761765
10987871442
1146769a488
12236a04a42
1312988181c
14952b165c
155bad79b2
hex3ae1b8d2

987871442 has 8 divisors (see below), whose sum is σ = 1482108300. Its totient is φ = 493835344.

The previous prime is 987871433. The next prime is 987871453. The reversal of 987871442 is 244178789.

It can be written as a sum of positive squares in 2 ways, for example, as 987782041 + 89401 = 31429^2 + 299^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37217 + ... + 57972.

Almost surely, 2987871442 is an apocalyptic number.

987871442 is a deficient number, since it is larger than the sum of its proper divisors (494236858).

987871442 is a wasteful number, since it uses less digits than its factorization.

987871442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100380.

The product of its digits is 903168, while the sum is 50.

The square root of 987871442 is about 31430.4222370620. The cubic root of 987871442 is about 995.9406916454.

The spelling of 987871442 in words is "nine hundred eighty-seven million, eight hundred seventy-one thousand, four hundred forty-two".

Divisors: 1 2 5189 10378 95189 190378 493935721 987871442