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60720012 = 22321686667
BaseRepresentation
bin1110011110100…
…0001110001100
311020020220012100
43213220032030
5111021020022
610005235100
71335053163
oct347501614
9136226170
1060720012
1131302931
1218402a90
13c76c902
1480c83da
1554e61ac
hex39e838c

60720012 has 18 divisors (see below), whose sum is σ = 153486788. Its totient is φ = 20239992.

The previous prime is 60719987. The next prime is 60720017. The reversal of 60720012 is 21002706.

It is a happy number.

60720012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (60720017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 843298 + ... + 843369.

Almost surely, 260720012 is an apocalyptic number.

It is an amenable number.

60720012 is an abundant number, since it is smaller than the sum of its proper divisors (92766776).

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

60720012 is a wasteful number, since it uses less digits than its factorization.

60720012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686677 (or 1686672 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 60720012 is about 7792.3046655017. The cubic root of 60720012 is about 393.0465147049.

Adding to 60720012 its reverse (21002706), we get a palindrome (81722718).

The spelling of 60720012 in words is "sixty million, seven hundred twenty thousand, twelve".

Divisors: 1 2 3 4 6 9 12 18 36 1686667 3373334 5060001 6746668 10120002 15180003 20240004 30360006 60720012