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206890372 = 221343671381
BaseRepresentation
bin11000101010011…
…10010110000100
3112102022010020101
430111032112010
5410430442442
632310213444
75061352633
oct1425162604
9472263211
10206890372
11a6869887
1259354284
1333b2a650
141d69751a
151326acb7
hexc54e584

206890372 has 48 divisors (see below), whose sum is σ = 405224512. Its totient is φ = 91808640.

The previous prime is 206890363. The next prime is 206890399. The reversal of 206890372 is 273098602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149122 + ... + 150502.

Almost surely, 2206890372 is an apocalyptic number.

It is an amenable number.

206890372 is a deficient number, since it is larger than the sum of its proper divisors (198334140).

206890372 is a wasteful number, since it uses less digits than its factorization.

206890372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508 (or 1506 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 206890372 is about 14383.6842290145. The cubic root of 206890372 is about 591.4437227970.

The spelling of 206890372 in words is "two hundred six million, eight hundred ninety thousand, three hundred seventy-two".

Divisors: 1 2 4 13 26 43 52 67 86 134 172 268 559 871 1118 1381 1742 2236 2762 2881 3484 5524 5762 11524 17953 35906 37453 59383 71812 74906 92527 118766 149812 185054 237532 370108 771979 1202851 1543958 2405702 3087916 3978661 4811404 7957322 15914644 51722593 103445186 206890372