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1129872 = 24323539
BaseRepresentation
bin100010011110110010000
32010101220010
410103312100
5242123442
640114520
712414042
oct4236620
92111803
101129872
11701987
12465a40
13307383
14215a92
15174b9c
hex113d90

1129872 has 20 divisors (see below), whose sum is σ = 2918960. Its totient is φ = 376608.

The previous prime is 1129861. The next prime is 1129889. The reversal of 1129872 is 2789211.

It is a super-2 number, since 2×11298722 = 2553221472768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11722 + ... + 11817.

It is an arithmetic number, because the mean of its divisors is an integer number (145948).

21129872 is an apocalyptic number.

1129872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1129872 is an abundant number, since it is smaller than the sum of its proper divisors (1789088).

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

1129872 is a wasteful number, since it uses less digits than its factorization.

1129872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23550 (or 23544 counting only the distinct ones).

The product of its digits is 2016, while the sum is 30.

The square root of 1129872 is about 1062.9543734328. The cubic root of 1129872 is about 104.1541107711.

The spelling of 1129872 in words is "one million, one hundred twenty-nine thousand, eight hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 16 24 48 23539 47078 70617 94156 141234 188312 282468 376624 564936 1129872