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645820082 = 22329484123
BaseRepresentation
bin100110011111100…
…110111010110010
31200000020001121022
4212133212322302
52310312220312
6144030055442
722001244245
oct4637467262
91600201538
10645820082
11301604206
1216034a582
13a3a4c57b
1461ab325c
153ba6e172
hex267e6eb2

645820082 has 16 divisors (see below), whose sum is σ = 1045707840. Its totient is φ = 298219152.

The previous prime is 645820079. The next prime is 645820103. The reversal of 645820082 is 280028546.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240728 + ... + 243395.

It is an arithmetic number, because the mean of its divisors is an integer number (65356740).

Almost surely, 2645820082 is an apocalyptic number.

645820082 is a deficient number, since it is larger than the sum of its proper divisors (399887758).

645820082 is a wasteful number, since it uses less digits than its factorization.

645820082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484177.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 645820082 is about 25412.9904182880. The cubic root of 645820082 is about 864.3782860323.

The spelling of 645820082 in words is "six hundred forty-five million, eight hundred twenty thousand, eighty-two".

Divisors: 1 2 23 29 46 58 667 1334 484123 968246 11134829 14039567 22269658 28079134 322910041 645820082