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64200030 = 2352140001
BaseRepresentation
bin1111010011100…
…1110101011110
311110210200212220
43310321311132
5112413400110
610212010210
71406456046
oct364716536
9143720786
1064200030
113326a484
1219600966
13103ba8ab
148752726
155982370
hex3d39d5e

64200030 has 16 divisors (see below), whose sum is σ = 154080144. Its totient is φ = 17120000.

The previous prime is 64200023. The next prime is 64200047. The reversal of 64200030 is 3000246.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64199982 and 64200009.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1069971 + ... + 1070030.

It is an arithmetic number, because the mean of its divisors is an integer number (9630009).

Almost surely, 264200030 is an apocalyptic number.

64200030 is an abundant number, since it is smaller than the sum of its proper divisors (89880114).

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

64200030 is a wasteful number, since it uses less digits than its factorization.

64200030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140011.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 64200030 is about 8012.4921216810. The cubic root of 64200030 is about 400.4162957610.

Adding to 64200030 its reverse (3000246), we get a palindrome (67200276).

The spelling of 64200030 in words is "sixty-four million, two hundred thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 2140001 4280002 6420003 10700005 12840006 21400010 32100015 64200030