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380340013 = 497376481
BaseRepresentation
bin10110101010111…
…000011100101101
3222111200021102011
4112222320130231
51234331340023
6101424001221
712265560004
oct2652703455
9874607364
10380340013
11185768099
12a7460211
1360a49b81
1438727c3b
15235cd50d
hex16ab872d

380340013 has 4 divisors (see below), whose sum is σ = 380421468. Its totient is φ = 380258560.

The previous prime is 380340011. The next prime is 380340047. The reversal of 380340013 is 310043083.

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 84603204 + 295736809 = 9198^2 + 17197^2 .

It is a cyclic number.

It is not a de Polignac number, because 380340013 - 21 = 380340011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380340011) 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, 33268 + ... + 43213.

It is an arithmetic number, because the mean of its divisors is an integer number (95105367).

Almost surely, 2380340013 is an apocalyptic number.

It is an amenable number.

380340013 is a deficient number, since it is larger than the sum of its proper divisors (81455).

380340013 is an equidigital number, since it uses as much as digits as its factorization.

380340013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81454.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 380340013 is about 19502.3078890679. The cubic root of 380340013 is about 724.5316121669.

Adding to 380340013 its reverse (310043083), we get a palindrome (690383096).

The spelling of 380340013 in words is "three hundred eighty million, three hundred forty thousand, thirteen".

Divisors: 1 4973 76481 380340013