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20464223 = 134733493
BaseRepresentation
bin100111000010…
…0001001011111
31102111200122012
41032010021133
520214323343
62010341435
7335641313
oct116041137
942450565
1020464223
111060808a
126a2a87b
134316810
142a09b43
151be3718
hex138425f

20464223 has 8 divisors (see below), whose sum is σ = 22507968. Its totient is φ = 18487584.

The previous prime is 20464217. The next prime is 20464229. The reversal of 20464223 is 32246402.

It is an interprime number because it is at equal distance from previous prime (20464217) and next prime (20464229).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20464223 - 210 = 20463199 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 (20464229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16136 + ... + 17357.

It is an arithmetic number, because the mean of its divisors is an integer number (2813496).

Almost surely, 220464223 is an apocalyptic number.

20464223 is a deficient number, since it is larger than the sum of its proper divisors (2043745).

20464223 is a wasteful number, since it uses less digits than its factorization.

20464223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33553.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 20464223 is about 4523.7399350537. The cubic root of 20464223 is about 273.5258774548.

The spelling of 20464223 in words is "twenty million, four hundred sixty-four thousand, two hundred twenty-three".

Divisors: 1 13 47 611 33493 435409 1574171 20464223