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680225252 = 2273495791
BaseRepresentation
bin101000100010110…
…110100111100100
31202101222000121212
4220202312213210
52343114202002
6151255330552
722566551000
oct5042664744
91671860555
10680225252
11319a73333
1216b980a58
13aac07665
14664ab700
153eab8352
hex288b69e4

680225252 has 24 divisors (see below), whose sum is σ = 1388217600. Its totient is φ = 291524520.

The previous prime is 680225209. The next prime is 680225261. The reversal of 680225252 is 252522086.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246524 + ... + 249267.

It is an arithmetic number, because the mean of its divisors is an integer number (57842400).

Almost surely, 2680225252 is an apocalyptic number.

It is an amenable number.

680225252 is an abundant number, since it is smaller than the sum of its proper divisors (707992348).

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

680225252 is a wasteful number, since it uses less digits than its factorization.

680225252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495816 (or 495800 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 680225252 is about 26081.1282731403. The cubic root of 680225252 is about 879.4630212297.

The spelling of 680225252 in words is "six hundred eighty million, two hundred twenty-five thousand, two hundred fifty-two".

Divisors: 1 2 4 7 14 28 49 98 196 343 686 1372 495791 991582 1983164 3470537 6941074 13882148 24293759 48587518 97175036 170056313 340112626 680225252