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4278130 = 25427813
BaseRepresentation
bin10000010100011101110010
322001100111021
4100110131302
52043400010
6231410054
751235453
oct20243562
98040437
104278130
11246224a
12152392a
13b6a34c
147d512a
155978da
hex414772

4278130 has 8 divisors (see below), whose sum is σ = 7700652. Its totient is φ = 1711248.

The previous prime is 4278121. The next prime is 4278133. The reversal of 4278130 is 318724.

It can be written as a sum of positive squares in 2 ways, for example, as 3426201 + 851929 = 1851^2 + 923^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4278095 and 4278104.

It is not an unprimeable number, because it can be changed into a prime (4278133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213897 + ... + 213916.

Almost surely, 24278130 is an apocalyptic number.

4278130 is a deficient number, since it is larger than the sum of its proper divisors (3422522).

4278130 is a wasteful number, since it uses less digits than its factorization.

4278130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427820.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 4278130 is about 2068.3640878723. The cubic root of 4278130 is about 162.3371781330.

The spelling of 4278130 in words is "four million, two hundred seventy-eight thousand, one hundred thirty".

Divisors: 1 2 5 10 427813 855626 2139065 4278130