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72903041 = 3110312281
BaseRepresentation
bin1000101100001…
…10100110000001
312002011212011122
410112012212001
5122130344131
611122322025
71543444211
oct426064601
9162155148
1072903041
1138174152
12204b9315
1312146cc3
14997a241
156600d7b
hex4586981

72903041 has 8 divisors (see below), whose sum is σ = 75360768. Its totient is φ = 70452000.

The previous prime is 72903011. The next prime is 72903079. The reversal of 72903041 is 14030927.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-72903041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72903041.

It is not an unprimeable number, because it can be changed into a prime (72903011) 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, 30821 + ... + 33101.

It is an arithmetic number, because the mean of its divisors is an integer number (9420096).

Almost surely, 272903041 is an apocalyptic number.

It is an amenable number.

72903041 is a deficient number, since it is larger than the sum of its proper divisors (2457727).

72903041 is a wasteful number, since it uses less digits than its factorization.

72903041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3343.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 72903041 is about 8538.3277636783. The cubic root of 72903041 is about 417.7488036158.

Adding to 72903041 its reverse (14030927), we get a palindrome (86933968).

The spelling of 72903041 in words is "seventy-two million, nine hundred three thousand, forty-one".

Divisors: 1 31 1031 2281 31961 70711 2351711 72903041