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12290080 = 255116983
BaseRepresentation
bin101110111000…
…100000100000
3212010101211011
4232320200200
511121240310
61115230304
7206315065
oct56704040
925111734
1012290080
116a347a0
124148394
13271404a
1418bcc6c
15112b78a
hexbb8820

12290080 has 48 divisors (see below), whose sum is σ = 31679424. Its totient is φ = 4468480.

The previous prime is 12290071. The next prime is 12290123. The reversal of 12290080 is 8009221.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1732 + ... + 5251.

It is an arithmetic number, because the mean of its divisors is an integer number (659988).

Almost surely, 212290080 is an apocalyptic number.

12290080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12290080 is an abundant number, since it is smaller than the sum of its proper divisors (19389344).

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

12290080 is a wasteful number, since it uses less digits than its factorization.

12290080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7009 (or 7001 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 12290080 is about 3505.7210385312. The cubic root of 12290080 is about 230.7729508232.

It can be divided in two parts, 12 and 290080, that added together give a palindrome (290092).

The spelling of 12290080 in words is "twelve million, two hundred ninety thousand, eighty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 80 88 110 160 176 220 352 440 880 1760 6983 13966 27932 34915 55864 69830 76813 111728 139660 153626 223456 279320 307252 384065 558640 614504 768130 1117280 1229008 1536260 2458016 3072520 6145040 12290080