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63472213 = 7291132767
BaseRepresentation
bin1111001000100…
…0001001010101
311102102201111201
43302020021111
5112222102323
610144232501
71400335120
oct362101125
9142381451
1063472213
1132912682
121930b731
13101c452c
1486033b7
15588b8ad
hex3c88255

63472213 has 16 divisors (see below), whose sum is σ = 75732480. Its totient is φ = 52045056.

The previous prime is 63472193. The next prime is 63472247. The reversal of 63472213 is 31227436.

It is a de Polignac number, because none of the positive numbers 2k-63472213 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 (63472813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21556 + ... + 24322.

It is an arithmetic number, because the mean of its divisors is an integer number (4733280).

Almost surely, 263472213 is an apocalyptic number.

It is an amenable number.

63472213 is a deficient number, since it is larger than the sum of its proper divisors (12260267).

63472213 is a wasteful number, since it uses less digits than its factorization.

63472213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916.

The product of its digits is 6048, while the sum is 28.

The square root of 63472213 is about 7966.9450230311. The cubic root of 63472213 is about 398.8974072657.

Adding to 63472213 its reverse (31227436), we get a palindrome (94699649).

The spelling of 63472213 in words is "sixty-three million, four hundred seventy-two thousand, two hundred thirteen".

Divisors: 1 7 29 113 203 791 2767 3277 19369 22939 80243 312671 561701 2188697 9067459 63472213