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1428570 = 2335111337
BaseRepresentation
bin101011100110001011010
32200120122000
411130301122
5331203240
650341430
715066633
oct5346132
92616560
101428570
11896340
1258a876
133b0310
1429288a
151d3430
hex15cc5a

1428570 has 128 divisors (see below), whose sum is σ = 4596480. Its totient is φ = 311040.

The previous prime is 1428541. The next prime is 1428571. The reversal of 1428570 is 758241.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38592 + ... + 38628.

It is an arithmetic number, because the mean of its divisors is an integer number (35910).

21428570 is an apocalyptic number.

1428570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1428570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2298240).

1428570 is an abundant number, since it is smaller than the sum of its proper divisors (3167910).

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

1428570 is a wasteful number, since it uses less digits than its factorization.

1428570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 1428570 is about 1195.2280117199. The cubic root of 1428570 is about 112.6247505028.

The spelling of 1428570 in words is "one million, four hundred twenty-eight thousand, five hundred seventy".

Divisors: 1 2 3 5 6 9 10 11 13 15 18 22 26 27 30 33 37 39 45 54 55 65 66 74 78 90 99 110 111 117 130 135 143 165 185 195 198 222 234 270 286 297 330 333 351 370 390 407 429 481 495 555 585 594 666 702 715 814 858 962 990 999 1110 1170 1221 1287 1430 1443 1485 1665 1755 1998 2035 2145 2405 2442 2574 2886 2970 3330 3510 3663 3861 4070 4290 4329 4810 4995 5291 6105 6435 7215 7326 7722 8658 9990 10582 10989 12210 12870 12987 14430 15873 18315 19305 21645 21978 25974 26455 31746 36630 38610 43290 47619 52910 54945 64935 79365 95238 109890 129870 142857 158730 238095 285714 476190 714285 1428570