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206802140 = 22510340107
BaseRepresentation
bin11000101001110…
…00110011011100
3112102010122012112
430110320303130
5410420132030
632304253152
75060534456
oct1424706334
9472118175
10206802140
11a6809566
12593111b8
1333ac943c
141d6732d6
151324ea95
hexc538cdc

206802140 has 12 divisors (see below), whose sum is σ = 434284536. Its totient is φ = 82720848.

The previous prime is 206802121. The next prime is 206802143. The reversal of 206802140 is 41208602.

206802140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206802143) 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, 5170034 + ... + 5170073.

It is an arithmetic number, because the mean of its divisors is an integer number (36190378).

Almost surely, 2206802140 is an apocalyptic number.

206802140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206802140 is an abundant number, since it is smaller than the sum of its proper divisors (227482396).

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

206802140 is a wasteful number, since it uses less digits than its factorization.

206802140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10340116 (or 10340114 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 206802140 is about 14380.6168157002. The cubic root of 206802140 is about 591.3596336856.

The spelling of 206802140 in words is "two hundred six million, eight hundred two thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 10340107 20680214 41360428 51700535 103401070 206802140