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72238682 = 253681497
BaseRepresentation
bin1000100111001…
…00011001011010
312000221002211202
410103210121122
5121443114212
611100154202
71535006255
oct423443132
9160832752
1072238682
113785aa9a
1220238962
1311c737a9
14984609c
15651e0c2
hex44e465a

72238682 has 8 divisors (see below), whose sum is σ = 110402676. Its totient is φ = 35437792.

The previous prime is 72238657. The next prime is 72238687. The reversal of 72238682 is 28683227.

It can be written as a sum of positive squares in 2 ways, for example, as 72063121 + 175561 = 8489^2 + 419^2 .

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

It is not an unprimeable number, because it can be changed into a prime (72238687) 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, 340643 + ... + 340854.

Almost surely, 272238682 is an apocalyptic number.

72238682 is a deficient number, since it is larger than the sum of its proper divisors (38163994).

72238682 is a wasteful number, since it uses less digits than its factorization.

72238682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681552.

The product of its digits is 64512, while the sum is 38.

The square root of 72238682 is about 8499.3342092190. The cubic root of 72238682 is about 416.4759599454.

The spelling of 72238682 in words is "seventy-two million, two hundred thirty-eight thousand, six hundred eighty-two".

Divisors: 1 2 53 106 681497 1362994 36119341 72238682