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72863051 = 293181049
BaseRepresentation
bin1000101011111…
…00110101001011
312002002211022112
410111330311023
5122123104201
611121412535
71543216502
oct425746513
9162084275
1072863051
11381470a8
122049a14b
1312131a41
149969839
1565e40bb
hex457cd4b

72863051 has 8 divisors (see below), whose sum is σ = 77808000. Its totient is φ = 68080320.

The previous prime is 72863047. The next prime is 72863059. The reversal of 72863051 is 15036827.

It is a happy number.

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 72863051 - 22 = 72863047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72862999 and 72863017.

It is not an unprimeable number, because it can be changed into a prime (72863059) 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, 39626 + ... + 41423.

It is an arithmetic number, because the mean of its divisors is an integer number (9726000).

Almost surely, 272863051 is an apocalyptic number.

72863051 is a deficient number, since it is larger than the sum of its proper divisors (4944949).

72863051 is a wasteful number, since it uses less digits than its factorization.

72863051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81109.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 72863051 is about 8535.9856490039. The cubic root of 72863051 is about 417.6724061161.

Adding to 72863051 its reverse (15036827), we get a palindrome (87899878).

The spelling of 72863051 in words is "seventy-two million, eight hundred sixty-three thousand, fifty-one".

Divisors: 1 29 31 899 81049 2350421 2512519 72863051