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20363413 = 72909059
BaseRepresentation
bin100110110101…
…1100010010101
31102022120100111
41031223202111
520203112123
62004243021
7335041360
oct115534225
942276314
1020363413
1110549374
1269a0471
1342ac975
1429c10d7
151bc390d
hex136b895

20363413 has 4 divisors (see below), whose sum is σ = 23272480. Its totient is φ = 17454348.

The previous prime is 20363389. The next prime is 20363419. The reversal of 20363413 is 31436302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31436302 = 215718151.

It is a cyclic number.

It is not a de Polignac number, because 20363413 - 213 = 20355221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20363419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1454523 + ... + 1454536.

It is an arithmetic number, because the mean of its divisors is an integer number (5818120).

Almost surely, 220363413 is an apocalyptic number.

It is an amenable number.

20363413 is a deficient number, since it is larger than the sum of its proper divisors (2909067).

20363413 is an equidigital number, since it uses as much as digits as its factorization.

20363413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2909066.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 20363413 is about 4512.5838496365. The cubic root of 20363413 is about 273.0759939968.

Adding to 20363413 its reverse (31436302), we get a palindrome (51799715).

The spelling of 20363413 in words is "twenty million, three hundred sixty-three thousand, four hundred thirteen".

Divisors: 1 7 2909059 20363413