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38891300213 = 247715700969
BaseRepresentation
bin100100001110000110…
…100010010101110101
310201101101211202022102
4210032012202111311
51114122133101323
625511051311445
72544522411623
oct441606422565
9121341752272
1038891300213
1115548141527
12765474b585
13388a476a9c
141c4d246513
1510294d3328
hex90e1a2575

38891300213 has 4 divisors (see below), whose sum is σ = 38907003660. Its totient is φ = 38875596768.

The previous prime is 38891300207. The next prime is 38891300219. The reversal of 38891300213 is 31200319883.

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

It is an interprime number because it is at equal distance from previous prime (38891300207) and next prime (38891300219).

It can be written as a sum of positive squares in 2 ways, for example, as 12459694129 + 26431606084 = 111623^2 + 162578^2 .

It is a cyclic number.

It is not a de Polignac number, because 38891300213 - 214 = 38891283829 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 (38891300219) 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, 7848008 + ... + 7852961.

It is an arithmetic number, because the mean of its divisors is an integer number (9726750915).

Almost surely, 238891300213 is an apocalyptic number.

It is an amenable number.

38891300213 is a deficient number, since it is larger than the sum of its proper divisors (15703447).

38891300213 is a wasteful number, since it uses less digits than its factorization.

38891300213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15703446.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 38891300213 in words is "thirty-eight billion, eight hundred ninety-one million, three hundred thousand, two hundred thirteen".

Divisors: 1 2477 15700969 38891300213