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442270 = 2547941
BaseRepresentation
bin1101011111110011110
3211110200101
41223332132
5103123040
613251314
73521263
oct1537636
9743611
10442270
11282314
12193b3a
131263ca
14b726a
158b09a
hex6bf9e

442270 has 16 divisors (see below), whose sum is σ = 813888. Its totient is φ = 172960.

The previous prime is 442243. The next prime is 442271. The reversal of 442270 is 72244.

442270 is a nontrivial binomial coefficient, being equal to C(941, 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442271) by changing a digit.

442270 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, 1 + ... + 940.

It is an arithmetic number, because the mean of its divisors is an integer number (50868).

2442270 is an apocalyptic number.

442270 is the 940-th triangular number.

442270 is the 314-th centered nonagonal number.

442270 is a deficient number, since it is larger than the sum of its proper divisors (371618).

442270 is a wasteful number, since it uses less digits than its factorization.

442270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 442270 is about 665.0338337258. The cubic root of 442270 is about 76.1896234404.

The spelling of 442270 in words is "four hundred forty-two thousand, two hundred seventy", and thus it is an iban number.

Divisors: 1 2 5 10 47 94 235 470 941 1882 4705 9410 44227 88454 221135 442270