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1293288 = 23353887
BaseRepresentation
bin100111011101111101000
32102201001120
410323233220
5312341123
643415240
713664343
oct4735750
92381046
101293288
11803737
12524520
13363879
1425945a
151a82e3
hex13bbe8

1293288 has 16 divisors (see below), whose sum is σ = 3233280. Its totient is φ = 431088.

The previous prime is 1293287. The next prime is 1293307. The reversal of 1293288 is 8823921.

It is not an unprimeable number, because it can be changed into a prime (1293283) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 26920 + ... + 26967.

It is an arithmetic number, because the mean of its divisors is an integer number (202080).

21293288 is an apocalyptic number.

It is an amenable number.

1293288 is an abundant number, since it is smaller than the sum of its proper divisors (1939992).

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

1293288 is a wasteful number, since it uses less digits than its factorization.

1293288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53896 (or 53892 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 1293288 is about 1137.2282092878. The cubic root of 1293288 is about 108.9511325992.

The spelling of 1293288 in words is "one million, two hundred ninety-three thousand, two hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 24 53887 107774 161661 215548 323322 431096 646644 1293288