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1161028616 = 231131616977
BaseRepresentation
bin100010100110011…
…1110010000001000
32222220200100211212
41011030332100020
54334210403431
6311112512252
740525403036
oct10514762010
92886610755
101161028616
11546408a90
122849ab688
131566caba7
14b02a7556
156bddd72b
hex4533e408

1161028616 has 64 divisors (see below), whose sum is σ = 2491983360. Its totient is φ = 502272000.

The previous prime is 1161028591. The next prime is 1161028619. The reversal of 1161028616 is 6168201611.

It is not an unprimeable number, because it can be changed into a prime (1161028619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162920 + ... + 169896.

It is an arithmetic number, because the mean of its divisors is an integer number (38937240).

Almost surely, 21161028616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161028616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1245991680).

1161028616 is an abundant number, since it is smaller than the sum of its proper divisors (1330954744).

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

1161028616 is a wasteful number, since it uses less digits than its factorization.

1161028616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7086 (or 7082 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 1161028616 is about 34073.8699885998. The cubic root of 1161028616 is about 1051.0280531216.

The spelling of 1161028616 in words is "one billion, one hundred sixty-one million, twenty-eight thousand, six hundred sixteen".

Divisors: 1 2 4 8 11 22 31 44 61 62 88 122 124 244 248 341 488 671 682 1342 1364 1891 2684 2728 3782 5368 6977 7564 13954 15128 20801 27908 41602 55816 76747 83204 153494 166408 216287 306988 425597 432574 613976 851194 865148 1702388 1730296 2379157 3404776 4681567 4758314 9363134 9516628 13193507 18726268 19033256 26387014 37452536 52774028 105548056 145128577 290257154 580514308 1161028616