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981481648 = 2478763229
BaseRepresentation
bin111010100000000…
…011100010110000
32112101211102201011
4322200003202300
54002224403043
6241220320304
733215312350
oct7240034260
92471742634
10981481648
11464025764
12234843094
13128455294
14944cab60
155b27459d
hex3a8038b0

981481648 has 20 divisors (see below), whose sum is σ = 2173281040. Its totient is φ = 420634944.

The previous prime is 981481609. The next prime is 981481663. The reversal of 981481648 is 846184189.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4381503 + ... + 4381726.

It is an arithmetic number, because the mean of its divisors is an integer number (108664052).

Almost surely, 2981481648 is an apocalyptic number.

It is an amenable number.

981481648 is an abundant number, since it is smaller than the sum of its proper divisors (1191799392).

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

981481648 is a wasteful number, since it uses less digits than its factorization.

981481648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8763244 (or 8763238 counting only the distinct ones).

The product of its digits is 442368, while the sum is 49.

The square root of 981481648 is about 31328.6075017706. The cubic root of 981481648 is about 993.7887158261.

The spelling of 981481648 in words is "nine hundred eighty-one million, four hundred eighty-one thousand, six hundred forty-eight".

Divisors: 1 2 4 7 8 14 16 28 56 112 8763229 17526458 35052916 61342603 70105832 122685206 140211664 245370412 490740824 981481648