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200385740 = 22519152457
BaseRepresentation
bin10111111000110…
…10010011001100
3111222001122120002
423330122103030
5402244320430
631514543432
74652151662
oct1374322314
9458048502
10200385740
11a3126855
1257137b78
1332690a59
141c882c32
15128d3845
hexbf1a4cc

200385740 has 24 divisors (see below), whose sum is σ = 423021312. Its totient is φ = 79733120.

The previous prime is 200385707. The next prime is 200385743. The reversal of 200385740 is 47583002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (200385743) 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, 22409 + ... + 30048.

It is an arithmetic number, because the mean of its divisors is an integer number (17625888).

Almost surely, 2200385740 is an apocalyptic number.

200385740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200385740 is an abundant number, since it is smaller than the sum of its proper divisors (222635572).

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

200385740 is a wasteful number, since it uses less digits than its factorization.

200385740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52657 (or 52655 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 200385740 is about 14155.7670226661. The cubic root of 200385740 is about 585.1792763908.

The spelling of 200385740 in words is "two hundred million, three hundred eighty-five thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 191 382 764 955 1910 3820 52457 104914 209828 262285 524570 1049140 10019287 20038574 40077148 50096435 100192870 200385740