Search a number
-
+
20274713 = 31654023
BaseRepresentation
bin100110101010…
…1111000011001
31102011001200022
41031111320121
520142242323
62002320225
7334221644
oct115257031
942131608
1020274713
1110498768
126959075
13427b494
14299aa5b
151ba74c8
hex1355e19

20274713 has 4 divisors (see below), whose sum is σ = 20928768. Its totient is φ = 19620660.

The previous prime is 20274703. The next prime is 20274733. The reversal of 20274713 is 31747202.

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.

It is a cyclic number.

It is not a de Polignac number, because 20274713 - 24 = 20274697 is a prime.

It is a super-2 number, since 2×202747132 = 822127974464738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20274703) 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, 326981 + ... + 327042.

It is an arithmetic number, because the mean of its divisors is an integer number (5232192).

Almost surely, 220274713 is an apocalyptic number.

It is an amenable number.

20274713 is a deficient number, since it is larger than the sum of its proper divisors (654055).

20274713 is an equidigital number, since it uses as much as digits as its factorization.

20274713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654054.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 20274713 is about 4502.7450516324. The cubic root of 20274713 is about 272.6789240994.

The spelling of 20274713 in words is "twenty million, two hundred seventy-four thousand, seven hundred thirteen".

Divisors: 1 31 654023 20274713