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12941220 = 2235215687
BaseRepresentation
bin110001010111…
…011110100100
3220100111000110
4301113132210
511303104340
61141213020
7214666335
oct61273644
926314013
1012941220
117339a26
124401170
1328b1536
141a0c28c
151209680
hexc577a4

12941220 has 24 divisors (see below), whose sum is σ = 36235584. Its totient is φ = 3450976.

The previous prime is 12941219. The next prime is 12941239. The reversal of 12941220 is 2214921.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107784 + ... + 107903.

It is an arithmetic number, because the mean of its divisors is an integer number (1509816).

Almost surely, 212941220 is an apocalyptic number.

12941220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12941220 is an abundant number, since it is smaller than the sum of its proper divisors (23294364).

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

12941220 is a wasteful number, since it uses less digits than its factorization.

12941220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215699 (or 215697 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 12941220 is about 3597.3907210644. The cubic root of 12941220 is about 234.7785449586.

The spelling of 12941220 in words is "twelve million, nine hundred forty-one thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 215687 431374 647061 862748 1078435 1294122 2156870 2588244 3235305 4313740 6470610 12941220