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7255430 = 2572131767
BaseRepresentation
bin11011101011010110000110
3111122121120122
4123223112012
53324133210
6415301542
7115445600
oct33532606
914577518
107255430
114106126
12251a8b2
131670570
14d6c170
15984b55
hex6eb586

7255430 has 96 divisors (see below), whose sum is σ = 17581536. Its totient is φ = 2128896.

The previous prime is 7255403. The next prime is 7255453. The reversal of 7255430 is 345527.

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

It is a self number, because there is not a number n which added to its sum of digits gives 7255430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108257 + ... + 108323.

It is an arithmetic number, because the mean of its divisors is an integer number (183141).

Almost surely, 27255430 is an apocalyptic number.

7255430 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7255430 is an abundant number, since it is smaller than the sum of its proper divisors (10326106).

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

7255430 is a wasteful number, since it uses less digits than its factorization.

7255430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 7255430 is about 2693.5905405239. The cubic root of 7255430 is about 193.5921391920.

Subtracting from 7255430 its reverse (345527), we obtain a triangular number (6909903 = T3717).

The spelling of 7255430 in words is "seven million, two hundred fifty-five thousand, four hundred thirty".

Divisors: 1 2 5 7 10 13 14 17 26 34 35 49 65 67 70 85 91 98 119 130 134 170 182 221 238 245 335 442 455 469 490 595 637 670 833 871 910 938 1105 1139 1190 1274 1547 1666 1742 2210 2278 2345 3094 3185 3283 4165 4355 4690 5695 6097 6370 6566 7735 7973 8330 8710 10829 11390 12194 14807 15470 15946 16415 21658 29614 30485 32830 39865 42679 54145 55811 60970 74035 79730 85358 103649 108290 111622 148070 207298 213395 279055 426790 518245 558110 725543 1036490 1451086 3627715 7255430