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670930208 = 25133834211
BaseRepresentation
bin100111111111011…
…001010100100000
31201202110210012222
4213333121110200
52333224231313
6150324210212
722424545514
oct4777312440
91652423188
10670930208
113147a4883
12168839968
13a9001930
146516c144
153dd7e208
hex27fd9520

670930208 has 48 divisors (see below), whose sum is σ = 1426553856. Its totient is φ = 308778240.

The previous prime is 670930201. The next prime is 670930219. The reversal of 670930208 is 802039076.

It is not an unprimeable number, because it can be changed into a prime (670930201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157223 + ... + 161433.

It is an arithmetic number, because the mean of its divisors is an integer number (29719872).

Almost surely, 2670930208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670930208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713276928).

670930208 is an abundant number, since it is smaller than the sum of its proper divisors (755623648).

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

670930208 is a wasteful number, since it uses less digits than its factorization.

670930208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4617 (or 4609 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 670930208 is about 25902.3205138073. The cubic root of 670930208 is about 875.4387820517.

The spelling of 670930208 in words is "six hundred seventy million, nine hundred thirty thousand, two hundred eight".

Divisors: 1 2 4 8 13 16 26 32 52 104 208 383 416 766 1532 3064 4211 4979 6128 8422 9958 12256 16844 19916 33688 39832 54743 67376 79664 109486 134752 159328 218972 437944 875888 1612813 1751776 3225626 6451252 12902504 20966569 25805008 41933138 51610016 83866276 167732552 335465104 670930208