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1078013 = 4126293
BaseRepresentation
bin100000111001011111101
32000202202102
410013023331
5233444023
635034445
712106616
oct4071375
92022672
101078013
11676a22
1243ba25
132b98a1
14200c0d
15164628
hex1072fd

1078013 has 4 divisors (see below), whose sum is σ = 1104348. Its totient is φ = 1051680.

The previous prime is 1078009. The next prime is 1078019. The reversal of 1078013 is 3108701.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 611524 + 466489 = 782^2 + 683^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078013 - 22 = 1078009 is a prime.

It is a super-2 number, since 2×10780132 = 2324224056338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078019) 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, 13106 + ... + 13187.

It is an arithmetic number, because the mean of its divisors is an integer number (276087).

21078013 is an apocalyptic number.

It is an amenable number.

1078013 is a deficient number, since it is larger than the sum of its proper divisors (26335).

1078013 is an equidigital number, since it uses as much as digits as its factorization.

1078013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26334.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 1078013 is about 1038.2740486018. The cubic root of 1078013 is about 102.5355973920.

The spelling of 1078013 in words is "one million, seventy-eight thousand, thirteen".

Divisors: 1 41 26293 1078013