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72609241 = 194388873
BaseRepresentation
bin1000101001111…
…10110111011001
312001121221011011
410110332313121
5122041443431
611112133521
71541111515
oct424766731
9161557134
1072609241
1137a93441
12203972a1
1312073363
149901145
156593cb1
hex453edd9

72609241 has 8 divisors (see below), whose sum is σ = 78209120. Its totient is φ = 67187232.

The previous prime is 72609221. The next prime is 72609247. The reversal of 72609241 is 14290627.

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 72609241 - 217 = 72478169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72609247) 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, 43620 + ... + 45253.

It is an arithmetic number, because the mean of its divisors is an integer number (9776140).

Almost surely, 272609241 is an apocalyptic number.

It is an amenable number.

72609241 is a deficient number, since it is larger than the sum of its proper divisors (5599879).

72609241 is a wasteful number, since it uses less digits than its factorization.

72609241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88935.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 72609241 is about 8521.1056207513. The cubic root of 72609241 is about 417.1868707580.

Adding to 72609241 its reverse (14290627), we get a palindrome (86899868).

The spelling of 72609241 in words is "seventy-two million, six hundred nine thousand, two hundred forty-one".

Divisors: 1 19 43 817 88873 1688587 3821539 72609241