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72708260 = 2257151203
BaseRepresentation
bin1000101010101…
…11000010100100
312001210221222112
410111113002210
5122103131020
611114220152
71542003302
oct425270244
9161727875
1072708260
1138050879
1220424658
13120a9451
149929272
1565b32c5
hex45570a4

72708260 has 24 divisors (see below), whose sum is σ = 154840896. Its totient is φ = 28673120.

The previous prime is 72708257. The next prime is 72708263. The reversal of 72708260 is 6280727.

It is an interprime number because it is at equal distance from previous prime (72708257) and next prime (72708263).

It is not an unprimeable number, because it can be changed into a prime (72708263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24182 + ... + 27021.

It is an arithmetic number, because the mean of its divisors is an integer number (6451704).

Almost surely, 272708260 is an apocalyptic number.

It is an amenable number.

72708260 is an abundant number, since it is smaller than the sum of its proper divisors (82132636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72708260 is a wasteful number, since it uses less digits than its factorization.

72708260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51283 (or 51281 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 72708260 is about 8526.9138614155. The cubic root of 72708260 is about 417.3764272670.

Adding to 72708260 its reverse (6280727), we get a palindrome (78988987).

The spelling of 72708260 in words is "seventy-two million, seven hundred eight thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 71 142 284 355 710 1420 51203 102406 204812 256015 512030 1024060 3635413 7270826 14541652 18177065 36354130 72708260