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67025412 = 22321861817
BaseRepresentation
bin1111111110101…
…1101000000100
311200010020120200
43333223220010
5114124303122
610352330500
71442464236
oct377535004
9150106520
1067025412
113491a203
121a543a30
1310b6990c
148c8a256
155d3e5ac
hex3feba04

67025412 has 18 divisors (see below), whose sum is σ = 169425438. Its totient is φ = 22341792.

The previous prime is 67025411. The next prime is 67025419. The reversal of 67025412 is 21452076.

It can be written as a sum of positive squares in only one way, i.e., 53231616 + 13793796 = 7296^2 + 3714^2 .

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

It is not an unprimeable number, because it can be changed into a prime (67025411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 930873 + ... + 930944.

Almost surely, 267025412 is an apocalyptic number.

It is an amenable number.

67025412 is an abundant number, since it is smaller than the sum of its proper divisors (102400026).

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

67025412 is a wasteful number, since it uses less digits than its factorization.

67025412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861827 (or 1861822 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 67025412 is about 8186.9049096713. The cubic root of 67025412 is about 406.2061528377.

Adding to 67025412 its reverse (21452076), we get a palindrome (88477488).

The spelling of 67025412 in words is "sixty-seven million, twenty-five thousand, four hundred twelve".

Divisors: 1 2 3 4 6 9 12 18 36 1861817 3723634 5585451 7447268 11170902 16756353 22341804 33512706 67025412