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1304937980 = 22565246899
BaseRepresentation
bin100110111000111…
…1100010111111100
310100221110201101022
41031301330113330
510133031003410
6333253203312
744223534623
oct11561742774
93327421338
101304937980
1160a670245
12305030538
1317a476768
14c54486ba
1579868455
hex4dc7c5fc

1304937980 has 12 divisors (see below), whose sum is σ = 2740369800. Its totient is φ = 521975184.

The previous prime is 1304937979. The next prime is 1304937983. The reversal of 1304937980 is 897394031.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304937983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32623430 + ... + 32623469.

It is an arithmetic number, because the mean of its divisors is an integer number (228364150).

Almost surely, 21304937980 is an apocalyptic number.

1304937980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304937980 is an abundant number, since it is smaller than the sum of its proper divisors (1435431820).

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

1304937980 is a wasteful number, since it uses less digits than its factorization.

1304937980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65246908 (or 65246906 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1304937980 is about 36123.9253127342. The cubic root of 1304937980 is about 1092.7730027962.

The spelling of 1304937980 in words is "one billion, three hundred four million, nine hundred thirty-seven thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 65246899 130493798 260987596 326234495 652468990 1304937980