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4216249 = 16725247
BaseRepresentation
bin10000000101010110111001
321221012121101
4100011112321
52034404444
6230211401
750560162
oct20052671
97835541
104216249
11241a804
1214b3b61
13b4812b
147ba769
155843d4
hex4055b9

4216249 has 4 divisors (see below), whose sum is σ = 4241664. Its totient is φ = 4190836.

The previous prime is 4216241. The next prime is 4216283. The reversal of 4216249 is 9426124.

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 4216249 - 23 = 4216241 is a prime.

It is a Duffinian number.

4216249 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4216241) 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, 12457 + ... + 12790.

It is an arithmetic number, because the mean of its divisors is an integer number (1060416).

Almost surely, 24216249 is an apocalyptic number.

It is an amenable number.

4216249 is a deficient number, since it is larger than the sum of its proper divisors (25415).

4216249 is a wasteful number, since it uses less digits than its factorization.

4216249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25414.

The product of its digits is 3456, while the sum is 28.

The square root of 4216249 is about 2053.3506763337. The cubic root of 4216249 is about 161.5506651226.

It can be divided in two parts, 4216 and 249, that added together give a triangular number (4465 = T94).

The spelling of 4216249 in words is "four million, two hundred sixteen thousand, two hundred forty-nine".

Divisors: 1 167 25247 4216249