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2238880 = 25571999
BaseRepresentation
bin1000100010100110100000
311012202011111
420202212200
51033121010
6115553104
725013230
oct10424640
94182144
102238880
11129a116
128bb794
136050a7
14423cc0
152e358a
hex2229a0

2238880 has 48 divisors (see below), whose sum is σ = 6048000. Its totient is φ = 767232.

The previous prime is 2238823. The next prime is 2238931. The reversal of 2238880 is 888322.

It is an unprimeable 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, 121 + ... + 2119.

It is an arithmetic number, because the mean of its divisors is an integer number (126000).

22238880 is an apocalyptic number.

2238880 is a gapful number since it is divisible by the number (20) 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 2238880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3024000).

2238880 is an abundant number, since it is smaller than the sum of its proper divisors (3809120).

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

2238880 is a wasteful number, since it uses less digits than its factorization.

2238880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021 (or 2013 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 2238880 is about 1496.2887421885. The cubic root of 2238880 is about 130.8208416633.

The spelling of 2238880 in words is "two million, two hundred thirty-eight thousand, eight hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 70 80 112 140 160 224 280 560 1120 1999 3998 7996 9995 13993 15992 19990 27986 31984 39980 55972 63968 69965 79960 111944 139930 159920 223888 279860 319840 447776 559720 1119440 2238880