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1304980 = 22571919
BaseRepresentation
bin100111110100110010100
32110022002121
410332212110
5313224410
643545324
714043415
oct4764624
92408077
101304980
118114a6
1252b244
13368ca1
1425d80c
151ab9da
hex13e994

1304980 has 24 divisors (see below), whose sum is σ = 2782080. Its totient is φ = 514080.

The previous prime is 1304969. The next prime is 1304981. The reversal of 1304980 is 894031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304981) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 961 + ... + 1879.

It is an arithmetic number, because the mean of its divisors is an integer number (115920).

21304980 is an apocalyptic number.

1304980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304980 is an abundant number, since it is smaller than the sum of its proper divisors (1477100).

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

1304980 is a wasteful number, since it uses less digits than its factorization.

1304980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999 (or 997 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1304980 is about 1142.3572120839. The cubic root of 1304980 is about 109.2784732045.

The spelling of 1304980 in words is "one million, three hundred four thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 71 142 284 355 710 919 1420 1838 3676 4595 9190 18380 65249 130498 260996 326245 652490 1304980