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425280 = 2635443
BaseRepresentation
bin1100111110101000000
3210121101010
41213311000
5102102110
613040520
73420612
oct1476500
9717333
10425280
11270579
12186140
1311b75b
14b0db2
1586020
hex67d40

425280 has 56 divisors (see below), whose sum is σ = 1353312. Its totient is φ = 113152.

The previous prime is 425279. The next prime is 425281. The reversal of 425280 is 82524.

It is an interprime number because it is at equal distance from previous prime (425279) and next prime (425281).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739 + ... + 1181.

2425280 is an apocalyptic number.

425280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (676656).

425280 is an abundant number, since it is smaller than the sum of its proper divisors (928032).

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

425280 is a wasteful number, since it uses less digits than its factorization.

425280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 425280 is about 652.1349553582. The cubic root of 425280 is about 75.2012373419.

The spelling of 425280 in words is "four hundred twenty-five thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 160 192 240 320 443 480 886 960 1329 1772 2215 2658 3544 4430 5316 6645 7088 8860 10632 13290 14176 17720 21264 26580 28352 35440 42528 53160 70880 85056 106320 141760 212640 425280