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1026047980 = 225711993631
BaseRepresentation
bin111101001010000…
…011111111101100
32122111200122020001
4331022003333230
54100132013410
6245451434044
734266156346
oct7512037754
92574618201
101026047980
114871a5041
12247755924
1313475a3a9
149a3ac296
156012933a
hex3d283fec

1026047980 has 48 divisors (see below), whose sum is σ = 2196633600. Its totient is φ = 402494400.

The previous prime is 1026047969. The next prime is 1026047987. The reversal of 1026047980 is 897406201.

It is not an unprimeable number, because it can be changed into a prime (1026047987) 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, 280765 + ... + 284395.

It is an arithmetic number, because the mean of its divisors is an integer number (45763200).

Almost surely, 21026047980 is an apocalyptic number.

1026047980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1026047980 is an abundant number, since it is smaller than the sum of its proper divisors (1170585620).

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

1026047980 is a wasteful number, since it uses less digits than its factorization.

1026047980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910 (or 3908 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 1026047980 is about 32031.9837037921. The cubic root of 1026047980 is about 1008.6083437810.

The spelling of 1026047980 in words is "one billion, twenty-six million, forty-seven thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 71 142 199 284 355 398 710 796 995 1420 1990 3631 3980 7262 14129 14524 18155 28258 36310 56516 70645 72620 141290 257801 282580 515602 722569 1031204 1289005 1445138 2578010 2890276 3612845 5156020 7225690 14451380 51302399 102604798 205209596 256511995 513023990 1026047980