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319220 = 225111451
BaseRepresentation
bin1001101111011110100
3121012212222
41031323310
540203340
610501512
72466446
oct1157364
9535788
10319220
111a8920
12134898
13b23b5
1484496
15648b5
hex4def4

319220 has 24 divisors (see below), whose sum is σ = 731808. Its totient is φ = 116000.

The previous prime is 319211. The next prime is 319223. The reversal of 319220 is 22913.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 319220.

It is not an unprimeable number, because it can be changed into a prime (319223) by changing a digit.

319220 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506 + ... + 945.

It is an arithmetic number, because the mean of its divisors is an integer number (30492).

2319220 is an apocalyptic number.

It is an amenable number.

319220 is an abundant number, since it is smaller than the sum of its proper divisors (412588).

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

319220 is a wasteful number, since it uses less digits than its factorization.

319220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471 (or 1469 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 319220 is about 564.9955752039. The cubic root of 319220 is about 68.3434184335.

The spelling of 319220 in words is "three hundred nineteen thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 1451 2902 5804 7255 14510 15961 29020 31922 63844 79805 159610 319220