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8057380 = 225402869
BaseRepresentation
bin11110101111001000100100
3120011100122111
4132233020210
54030314010
6444410404
7125325622
oct36571044
916140574
108057380
1146036a1
122846a04
1318915a6
1410da512
15a9258a
hex7af224

8057380 has 12 divisors (see below), whose sum is σ = 16920540. Its totient is φ = 3222944.

The previous prime is 8057359. The next prime is 8057393. The reversal of 8057380 is 837508.

It can be written as a sum of positive squares in 2 ways, for example, as 2748964 + 5308416 = 1658^2 + 2304^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201415 + ... + 201454.

It is an arithmetic number, because the mean of its divisors is an integer number (1410045).

Almost surely, 28057380 is an apocalyptic number.

It is an amenable number.

8057380 is an abundant number, since it is smaller than the sum of its proper divisors (8863160).

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

8057380 is a wasteful number, since it uses less digits than its factorization.

8057380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402878 (or 402876 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 8057380 is about 2838.5524479918. The cubic root of 8057380 is about 200.4770279836.

The spelling of 8057380 in words is "eight million, fifty-seven thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 402869 805738 1611476 2014345 4028690 8057380