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9712980 = 2233517987
BaseRepresentation
bin100101000011…
…010101010100
3200021110201000
4211003111110
54441303410
6544103300
7145362504
oct45032524
920243630
109712980
115534562
123304b30
132021034
14140ba04
15cbcdc0
hex943554

9712980 has 48 divisors (see below), whose sum is σ = 30219840. Its totient is φ = 2589984.

The previous prime is 9712979. The next prime is 9712987. The reversal of 9712980 is 892179.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9712987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8454 + ... + 9533.

It is an arithmetic number, because the mean of its divisors is an integer number (629580).

Almost surely, 29712980 is an apocalyptic number.

9712980 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9712980 is an abundant number, since it is smaller than the sum of its proper divisors (20506860).

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

9712980 is a wasteful number, since it uses less digits than its factorization.

9712980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18005 (or 17997 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 9712980 is about 3116.5654172502. The cubic root of 9712980 is about 213.3622085481.

The spelling of 9712980 in words is "nine million, seven hundred twelve thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 90 108 135 180 270 540 17987 35974 53961 71948 89935 107922 161883 179870 215844 269805 323766 359740 485649 539610 647532 809415 971298 1079220 1618830 1942596 2428245 3237660 4856490 9712980