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1290066 = 231271693
BaseRepresentation
bin100111010111101010010
32102112122020
410322331102
5312240231
643352310
713652061
oct4727522
92375566
101290066
11801278
12522696
1336226b
142581d8
151a7396
hex13af52

1290066 has 16 divisors (see below), whose sum is σ = 2601984. Its totient is φ = 426384.

The previous prime is 1290049. The next prime is 1290077. The reversal of 1290066 is 6600921.

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, 85 + ... + 1608.

It is an arithmetic number, because the mean of its divisors is an integer number (162624).

21290066 is an apocalyptic number.

1290066 is an abundant number, since it is smaller than the sum of its proper divisors (1311918).

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

1290066 is a wasteful number, since it uses less digits than its factorization.

1290066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1290066 is about 1135.8107236683. The cubic root of 1290066 is about 108.8605798190.

Adding to 1290066 its reverse (6600921), we get a palindrome (7890987).

The spelling of 1290066 in words is "one million, two hundred ninety thousand, sixty-six".

Divisors: 1 2 3 6 127 254 381 762 1693 3386 5079 10158 215011 430022 645033 1290066