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308244 = 223171511
BaseRepresentation
bin1001011010000010100
3120122211110
41023100110
534330434
610335020
72422446
oct1132024
9518743
10308244
111a0652
1212a470
13aa3c1
1480496
15614e9
hex4b414

308244 has 24 divisors (see below), whose sum is σ = 762048. Its totient is φ = 96640.

The previous prime is 308219. The next prime is 308249. The reversal of 308244 is 442803.

It is a happy number.

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 self number, because there is not a number n which added to its sum of digits gives 308244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308249) by changing a digit.

308244 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552 + ... + 959.

It is an arithmetic number, because the mean of its divisors is an integer number (31752).

2308244 is an apocalyptic number.

308244 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

308244 is an abundant number, since it is smaller than the sum of its proper divisors (453804).

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

308244 is a wasteful number, since it uses less digits than its factorization.

308244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535 (or 1533 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 308244 is about 555.1972622411. The cubic root of 308244 is about 67.5509628848.

The spelling of 308244 in words is "three hundred eight thousand, two hundred forty-four".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 204 1511 3022 4533 6044 9066 18132 25687 51374 77061 102748 154122 308244