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72261041 = 671318233
BaseRepresentation
bin1000100111010…
…01110110110001
312000222020111212
410103221312301
5121444323131
611100445505
71535131406
oct423516661
9160866455
1072261041
1137875876
1220249895
1311c80a18
1498502ad
156525a2b
hex44e9db1

72261041 has 8 divisors (see below), whose sum is σ = 73908384. Its totient is φ = 70630560.

The previous prime is 72261019. The next prime is 72261071. The reversal of 72261041 is 14016227.

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 72261041 - 210 = 72260017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72260998 and 72261016.

It is not an unprimeable number, because it can be changed into a prime (72261071) 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, 4661 + ... + 12893.

It is an arithmetic number, because the mean of its divisors is an integer number (9238548).

Almost surely, 272261041 is an apocalyptic number.

It is an amenable number.

72261041 is a deficient number, since it is larger than the sum of its proper divisors (1647343).

72261041 is a wasteful number, since it uses less digits than its factorization.

72261041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8431.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 72261041 is about 8500.6494457777. The cubic root of 72261041 is about 416.5189241171.

Adding to 72261041 its reverse (14016227), we get a palindrome (86277268).

The spelling of 72261041 in words is "seventy-two million, two hundred sixty-one thousand, forty-one".

Divisors: 1 67 131 8233 8777 551611 1078523 72261041