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65000728 = 2313625007
BaseRepresentation
bin1111011111110…
…1010100011000
311112022101020101
43313331110120
5113120010403
610241105144
71416332332
oct367752430
9145271211
1065000728
1133767011
12199281b4
131060b190
1488c0452
155a8e71d
hex3dfd518

65000728 has 16 divisors (see below), whose sum is σ = 131251680. Its totient is φ = 30000288.

The previous prime is 65000711. The next prime is 65000743. The reversal of 65000728 is 82700056.

It is a junction number, because it is equal to n+sod(n) for n = 65000696 and 65000705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312400 + ... + 312607.

It is an arithmetic number, because the mean of its divisors is an integer number (8203230).

Almost surely, 265000728 is an apocalyptic number.

It is an amenable number.

65000728 is an abundant number, since it is smaller than the sum of its proper divisors (66250952).

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

65000728 is a wasteful number, since it uses less digits than its factorization.

65000728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625026 (or 625022 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 65000728 is about 8062.3028968155. The cubic root of 65000728 is about 402.0740769243.

The spelling of 65000728 in words is "sixty-five million, seven hundred twenty-eight", and thus it is an aban number.

Divisors: 1 2 4 8 13 26 52 104 625007 1250014 2500028 5000056 8125091 16250182 32500364 65000728