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65120752 = 2419214213
BaseRepresentation
bin1111100001101…
…0100111110000
311112112110212201
43320122213300
5113132331002
610243432544
71420342264
oct370324760
9145473781
1065120752
1133839204
1219985754
13106509b8
1489120a4
155ab5087
hex3e1a9f0

65120752 has 20 divisors (see below), whose sum is σ = 132812680. Its totient is φ = 30846528.

The previous prime is 65120743. The next prime is 65120753. The reversal of 65120752 is 25702156.

It is a self number, because there is not a number n which added to its sum of digits gives 65120752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65120753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106803 + ... + 107410.

It is an arithmetic number, because the mean of its divisors is an integer number (6640634).

Almost surely, 265120752 is an apocalyptic number.

It is an amenable number.

65120752 is an abundant number, since it is smaller than the sum of its proper divisors (67691928).

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

65120752 is a wasteful number, since it uses less digits than its factorization.

65120752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214240 (or 214234 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 65120752 is about 8069.7429946684. The cubic root of 65120752 is about 402.3214016736.

The spelling of 65120752 in words is "sixty-five million, one hundred twenty thousand, seven hundred fifty-two".

Divisors: 1 2 4 8 16 19 38 76 152 304 214213 428426 856852 1713704 3427408 4070047 8140094 16280188 32560376 65120752