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1283996 = 22726551
BaseRepresentation
bin100111001011110011100
32102020022102
410321132130
5312041441
643304232
713625300
oct4713634
92366272
101283996
117a775a
1251b078
1335c57c
14255d00
151a569b
hex13979c

1283996 has 18 divisors (see below), whose sum is σ = 2614248. Its totient is φ = 550200.

The previous prime is 1283983. The next prime is 1284007. The reversal of 1283996 is 6993821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3080 + ... + 3471.

It is an arithmetic number, because the mean of its divisors is an integer number (145236).

21283996 is an apocalyptic number.

It is an amenable number.

1283996 is an abundant number, since it is smaller than the sum of its proper divisors (1330252).

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

1283996 is a wasteful number, since it uses less digits than its factorization.

1283996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6569 (or 6560 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The square root of 1283996 is about 1133.1354729246. The cubic root of 1283996 is about 108.6895749228.

The spelling of 1283996 in words is "one million, two hundred eighty-three thousand, nine hundred ninety-six".

Divisors: 1 2 4 7 14 28 49 98 196 6551 13102 26204 45857 91714 183428 320999 641998 1283996