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308102830 = 25713133599
BaseRepresentation
bin10010010111010…
…100011010101110
3210110202020121221
4102113110122232
51112333242310
650323413554
710430554660
oct2227243256
9713666557
10308102830
11148a09242
12872242ba
134baa6c89
142ccc2530
151c0aeada
hex125d46ae

308102830 has 32 divisors (see below), whose sum is σ = 638668800. Its totient is φ = 104825760.

The previous prime is 308102827. The next prime is 308102843. The reversal of 308102830 is 38201803.

It is a junction number, because it is equal to n+sod(n) for n = 308102795 and 308102804.

It is a congruent number.

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, 7630 + ... + 25969.

It is an arithmetic number, because the mean of its divisors is an integer number (19958400).

Almost surely, 2308102830 is an apocalyptic number.

308102830 is an abundant number, since it is smaller than the sum of its proper divisors (330565970).

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

308102830 is a wasteful number, since it uses less digits than its factorization.

308102830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33744.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 308102830 is about 17552.8581718192. The cubic root of 308102830 is about 675.4064894995.

The spelling of 308102830 in words is "three hundred eight million, one hundred two thousand, eight hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 131 262 655 917 1310 1834 4585 9170 33599 67198 167995 235193 335990 470386 1175965 2351930 4401469 8802938 22007345 30810283 44014690 61620566 154051415 308102830