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252280 = 23571753
BaseRepresentation
bin111101100101111000
3110211001201
4331211320
531033110
65223544
72100340
oct754570
9424051
10252280
111625a6
12101bb4
138aaa2
1467d20
154eb3a
hex3d978

252280 has 64 divisors (see below), whose sum is σ = 699840. Its totient is φ = 79872.

The previous prime is 252277. The next prime is 252283. The reversal of 252280 is 82252.

It is an interprime number because it is at equal distance from previous prime (252277) and next prime (252283).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252283) 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 15 ways as a sum of consecutive naturals, for example, 4734 + ... + 4786.

It is an arithmetic number, because the mean of its divisors is an integer number (10935).

2252280 is an apocalyptic number.

252280 is a gapful number since it is divisible by the number (20) 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 252280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349920).

252280 is an abundant number, since it is smaller than the sum of its proper divisors (447560).

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

252280 is a wasteful number, since it uses less digits than its factorization.

252280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 252280 is about 502.2748251704. The cubic root of 252280 is about 63.1869812419.

The spelling of 252280 in words is "two hundred fifty-two thousand, two hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 17 20 28 34 35 40 53 56 68 70 85 106 119 136 140 170 212 238 265 280 340 371 424 476 530 595 680 742 901 952 1060 1190 1484 1802 1855 2120 2380 2968 3604 3710 4505 4760 6307 7208 7420 9010 12614 14840 18020 25228 31535 36040 50456 63070 126140 252280