Search a number
-
+
3287531569 = 7281912
BaseRepresentation
bin1100001111110011…
…1100000000110001
322111010001220111111
43003330330000301
523213102002234
61302115113321
7144316362100
oct30374740061
98433056444
103287531569
1114377a9143
12778ba2841
1340513806a
14232892037
1514393d664
hexc3f3c031

3287531569 has 9 divisors (see below), whose sum is σ = 3824738361. Its totient is φ = 2817540180.

The previous prime is 3287531561. The next prime is 3287531579. The reversal of 3287531569 is 9651357823.

The square root of 3287531569 is 57337.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 3287531569 - 23 = 3287531561 is a prime.

It is a super-2 number, since 2×32875315692 = 21615727634343203522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3287531561) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 397264 + ... + 405454.

It is an arithmetic number, because the mean of its divisors is an integer number (424970929).

Almost surely, 23287531569 is an apocalyptic number.

3287531569 is the 57337-th square number.

3287531569 is the 28669-th centered octagonal number.

It is an amenable number.

3287531569 is a deficient number, since it is larger than the sum of its proper divisors (537206792).

3287531569 is an frugal number, since it uses more digits than its factorization.

3287531569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16396 (or 8198 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 49.

The cubic root of 3287531569 is about 1486.9281289606.

Multiplying 3287531569 by its sum of digits (49), we get a square (161089046881 = 4013592).

3287531569 divided by its sum of digits (49) gives a square (67092481 = 81912).

The spelling of 3287531569 in words is "three billion, two hundred eighty-seven million, five hundred thirty-one thousand, five hundred sixty-nine".

Divisors: 1 7 49 8191 57337 401359 67092481 469647367 3287531569