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73000060 = 2257521429
BaseRepresentation
bin1000101100111…
…10010001111100
312002100210020221
410112132101330
5122142000220
611124351124
71544330110
oct426362174
9162323227
1073000060
1138230031
12205454a4
131217c203
1499a3740
15661e9aa
hex459e47c

73000060 has 24 divisors (see below), whose sum is σ = 175200480. Its totient is φ = 25028544.

The previous prime is 73000043. The next prime is 73000061. The reversal of 73000060 is 6000037.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72999998 and 73000043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73000061) 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, 260575 + ... + 260854.

It is an arithmetic number, because the mean of its divisors is an integer number (7300020).

Almost surely, 273000060 is an apocalyptic number.

73000060 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

73000060 is an abundant number, since it is smaller than the sum of its proper divisors (102200420).

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

73000060 is a wasteful number, since it uses less digits than its factorization.

73000060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521445 (or 521443 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 73000060 is about 8544.0072565512. The cubic root of 73000060 is about 417.9340341405.

Adding to 73000060 its reverse (6000037), we get a palindrome (79000097).

The spelling of 73000060 in words is "seventy-three million, sixty", and thus it is an aban number and an uban number.

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 521429 1042858 2085716 2607145 3650003 5214290 7300006 10428580 14600012 18250015 36500030 73000060