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1290030 = 23576143
BaseRepresentation
bin100111010111100101110
32102112120220
410322330232
5312240110
643352210
713652010
oct4727456
92375526
101290030
11801245
12522666
13362241
142581b0
151a7370
hex13af2e

1290030 has 32 divisors (see below), whose sum is σ = 3538944. Its totient is φ = 294816.

The previous prime is 1290019. The next prime is 1290031. The reversal of 1290030 is 300921.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 1289991 and 1290009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290031) 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 15 ways as a sum of consecutive naturals, for example, 2862 + ... + 3281.

It is an arithmetic number, because the mean of its divisors is an integer number (110592).

21290030 is an apocalyptic number.

1290030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1290030 is an abundant number, since it is smaller than the sum of its proper divisors (2248914).

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

1290030 is a wasteful number, since it uses less digits than its factorization.

1290030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6160.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1290030 is about 1135.7948758469. The cubic root of 1290030 is about 108.8595672048.

Adding to 1290030 its reverse (300921), we get a palindrome (1590951).

The spelling of 1290030 in words is "one million, two hundred ninety thousand, thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 6143 12286 18429 30715 36858 43001 61430 86002 92145 129003 184290 215005 258006 430010 645015 1290030