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8243488 = 251122129
BaseRepresentation
bin11111011100100100100000
3120111210221101
4133130210200
54102242423
6452404144
7130032331
oct37344440
916453841
108243488
114720500
122916654
131928206
141148288
15acc7ad
hex7dc920

8243488 has 36 divisors (see below), whose sum is σ = 17847270. Its totient is φ = 3745280.

The previous prime is 8243441. The next prime is 8243497. The reversal of 8243488 is 8843428.

It can be written as a sum of positive squares in only one way, i.e., 7683984 + 559504 = 2772^2 + 748^2 .

It is a super-2 number, since 2×82434882 = 135910188812288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2808 + ... + 4936.

Almost surely, 28243488 is an apocalyptic number.

8243488 is a gapful number since it is divisible by the number (88) 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 8243488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8923635).

8243488 is an abundant number, since it is smaller than the sum of its proper divisors (9603782).

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

8243488 is a wasteful number, since it uses less digits than its factorization.

8243488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161 (or 2142 counting only the distinct ones).

The product of its digits is 49152, while the sum is 37.

The square root of 8243488 is about 2871.1475057893. The cubic root of 8243488 is about 202.0088222791.

The spelling of 8243488 in words is "eight million, two hundred forty-three thousand, four hundred eighty-eight".

Divisors: 1 2 4 8 11 16 22 32 44 88 121 176 242 352 484 968 1936 2129 3872 4258 8516 17032 23419 34064 46838 68128 93676 187352 257609 374704 515218 749408 1030436 2060872 4121744 8243488