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239195980 = 225163239307
BaseRepresentation
bin11100100000111…
…01011101001100
3121200002102012101
432100131131030
5442213232410
635422444444
75633063242
oct1620353514
9550072171
10239195980
11113024531
1268133724
133a72bbaa
1423aa6792
1515eecd3a
hexe41d74c

239195980 has 48 divisors (see below), whose sum is σ = 509160960. Its totient is φ = 94385088.

The previous prime is 239195951. The next prime is 239195987. The reversal of 239195980 is 89591932.

239195980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 239195980.

It is not an unprimeable number, because it can be changed into a prime (239195987) 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, 778987 + ... + 779293.

It is an arithmetic number, because the mean of its divisors is an integer number (10607520).

Almost surely, 2239195980 is an apocalyptic number.

239195980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

239195980 is an abundant number, since it is smaller than the sum of its proper divisors (269964980).

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

239195980 is a wasteful number, since it uses less digits than its factorization.

239195980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 239195980 is about 15465.9619810731. The cubic root of 239195980 is about 620.7517589420.

The spelling of 239195980 in words is "two hundred thirty-nine million, one hundred ninety-five thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 163 239 307 326 478 614 652 815 956 1195 1228 1535 1630 2390 3070 3260 4780 6140 38957 50041 73373 77914 100082 146746 155828 194785 200164 250205 293492 366865 389570 500410 733730 779140 1000820 1467460 11959799 23919598 47839196 59798995 119597990 239195980