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207020807 = 7238112421
BaseRepresentation
bin11000101011011…
…10001100000111
3112102112202011022
430111232030013
5410444131212
632313101355
75062435130
oct1425561407
9472482138
10207020807
11a6948884
12593b785b
1333b74b26
141d6ccc87
1513294772
hexc56e307

207020807 has 8 divisors (see below), whose sum is σ = 236713632. Its totient is φ = 177357600.

The previous prime is 207020797. The next prime is 207020813. The reversal of 207020807 is 708020702.

207020807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 207020807 - 226 = 139911943 is a prime.

It is a super-2 number, since 2×2070208072 = 85715229061862498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207020207) 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, 10457 + ... + 22877.

It is an arithmetic number, because the mean of its divisors is an integer number (29589204).

Almost surely, 2207020807 is an apocalyptic number.

207020807 is a deficient number, since it is larger than the sum of its proper divisors (29692825).

207020807 is a wasteful number, since it uses less digits than its factorization.

207020807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14809.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 207020807 is about 14388.2176450038. The cubic root of 207020807 is about 591.5679895037.

The spelling of 207020807 in words is "two hundred seven million, twenty thousand, eight hundred seven".

Divisors: 1 7 2381 12421 16667 86947 29574401 207020807