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208756142 = 27234315077
BaseRepresentation
bin11000111000101…
…01110110101110
3112112210220120222
430130111312232
5411420144032
632414211342
75113253330
oct1434256656
9475726528
10208756142
11a7923641
1259ab3b52
133433195a
141da21450
15134d8a12
hexc715dae

208756142 has 32 divisors (see below), whose sum is σ = 382136832. Its totient is φ = 83581344.

The previous prime is 208756111. The next prime is 208756147. The reversal of 208756142 is 241657802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208756147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6308 + ... + 21384.

It is an arithmetic number, because the mean of its divisors is an integer number (11941776).

Almost surely, 2208756142 is an apocalyptic number.

208756142 is a deficient number, since it is larger than the sum of its proper divisors (173380690).

208756142 is a wasteful number, since it uses less digits than its factorization.

208756142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15152.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 208756142 is about 14448.3958279111. The cubic root of 208756142 is about 593.2163158395.

The spelling of 208756142 in words is "two hundred eight million, seven hundred fifty-six thousand, one hundred forty-two".

Divisors: 1 2 7 14 23 43 46 86 161 301 322 602 989 1978 6923 13846 15077 30154 105539 211078 346771 648311 693542 1296622 2427397 4538177 4854794 9076354 14911153 29822306 104378071 208756142