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65390316 = 2235449193
BaseRepresentation
bin1111100101110…
…0011011101100
311120001011122120
43321130123230
5113214442231
610253312540
71422544215
oct371343354
9146034576
1065390316
1133a02792
1219a95750
13107165c4
14898240c
155b19d96
hex3e5c6ec

65390316 has 12 divisors (see below), whose sum is σ = 152577432. Its totient is φ = 21796768.

The previous prime is 65390293. The next prime is 65390317. The reversal of 65390316 is 61309356.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (65390317) 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, 2724585 + ... + 2724608.

It is an arithmetic number, because the mean of its divisors is an integer number (12714786).

Almost surely, 265390316 is an apocalyptic number.

It is an amenable number.

65390316 is an abundant number, since it is smaller than the sum of its proper divisors (87187116).

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

65390316 is a wasteful number, since it uses less digits than its factorization.

65390316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449200 (or 5449198 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 65390316 is about 8086.4278887529. The cubic root of 65390316 is about 402.8757670294.

The spelling of 65390316 in words is "sixty-five million, three hundred ninety thousand, three hundred sixteen".

Divisors: 1 2 3 4 6 12 5449193 10898386 16347579 21796772 32695158 65390316