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875420 = 225713237
BaseRepresentation
bin11010101101110011100
31122110211222
43111232130
5211003140
630432512
710304150
oct3255634
91573758
10875420
11548797
12362738
13248600
1418b060
151245b5
hexd5b9c

875420 has 72 divisors (see below), whose sum is σ = 2336544. Its totient is φ = 269568.

The previous prime is 875419. The next prime is 875429. The reversal of 875420 is 24578.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 875420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (875429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23642 + ... + 23678.

It is an arithmetic number, because the mean of its divisors is an integer number (32452).

2875420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 875420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1168272).

875420 is an abundant number, since it is smaller than the sum of its proper divisors (1461124).

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

875420 is a wasteful number, since it uses less digits than its factorization.

875420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 875420 is about 935.6388192032. The cubic root of 875420 is about 95.6618601402.

875420 divided by its sum of digits (26) gives a triangular number (33670 = T259).

Adding to 875420 its reverse (24578), we get a palindrome (899998).

The spelling of 875420 in words is "eight hundred seventy-five thousand, four hundred twenty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 37 52 65 70 74 91 130 140 148 169 182 185 259 260 338 364 370 455 481 518 676 740 845 910 962 1036 1183 1295 1690 1820 1924 2366 2405 2590 3367 3380 4732 4810 5180 5915 6253 6734 9620 11830 12506 13468 16835 23660 25012 31265 33670 43771 62530 67340 87542 125060 175084 218855 437710 875420