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7420080 = 243543719
BaseRepresentation
bin11100010011100010110000
3111221222102210
4130103202300
53344420310
6423012120
7120032613
oct34234260
914858383
107420080
1142088a8
12259a040
1316ca4a5
14db217a
159b8820
hex7138b0

7420080 has 80 divisors (see below), whose sum is σ = 23569920. Its totient is φ = 1929984.

The previous prime is 7420079. The next prime is 7420097. The reversal of 7420080 is 800247.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9961 + ... + 10679.

It is an arithmetic number, because the mean of its divisors is an integer number (294624).

Almost surely, 27420080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7420080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11784960).

7420080 is an abundant number, since it is smaller than the sum of its proper divisors (16149840).

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

7420080 is a wasteful number, since it uses less digits than its factorization.

7420080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 7420080 is about 2723.9823787976. The cubic root of 7420080 is about 195.0456172041.

The spelling of 7420080 in words is "seven million, four hundred twenty thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 43 48 60 80 86 120 129 172 215 240 258 344 430 516 645 688 719 860 1032 1290 1438 1720 2064 2157 2580 2876 3440 3595 4314 5160 5752 7190 8628 10320 10785 11504 14380 17256 21570 28760 30917 34512 43140 57520 61834 86280 92751 123668 154585 172560 185502 247336 309170 371004 463755 494672 618340 742008 927510 1236680 1484016 1855020 2473360 3710040 7420080