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207920892 = 223197281313
BaseRepresentation
bin11000110010010…
…01111011111100
3112111020110211210
430121021323330
5411211432032
632344244420
75103204234
oct1431117374
9474213753
10207920892
11a7403053
1259770710
13340cb71a
141d884cc4
15133c12cc
hexc649efc

207920892 has 48 divisors (see below), whose sum is σ = 490910112. Its totient is φ = 68490240.

The previous prime is 207920891. The next prime is 207920957. The reversal of 207920892 is 298029702.

It is a self number, because there is not a number n which added to its sum of digits gives 207920892.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207920891) 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, 664128 + ... + 664440.

It is an arithmetic number, because the mean of its divisors is an integer number (10227294).

Almost surely, 2207920892 is an apocalyptic number.

It is an amenable number.

207920892 is an abundant number, since it is smaller than the sum of its proper divisors (282989220).

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

207920892 is a wasteful number, since it uses less digits than its factorization.

207920892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 207920892 is about 14419.4622645923. The cubic root of 207920892 is about 592.4240896892.

The spelling of 207920892 in words is "two hundred seven million, nine hundred twenty thousand, eight hundred ninety-two".

Divisors: 1 2 3 4 6 12 197 281 313 394 562 591 626 788 843 939 1124 1182 1252 1686 1878 2364 3372 3756 55357 61661 87953 110714 123322 166071 175906 184983 221428 246644 263859 332142 351812 369966 527718 664284 739932 1055436 17326741 34653482 51980223 69306964 103960446 207920892