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1002988 = 227113317
BaseRepresentation
bin11110100110111101100
31212221211201
43310313230
5224043423
633255244
711345110
oct3646754
91787751
101002988
11625618
12404524
132916ac
141c1740
1514c2ad
hexf4dec

1002988 has 24 divisors (see below), whose sum is σ = 2030112. Its totient is φ = 424704.

The previous prime is 1002979. The next prime is 1003001. The reversal of 1002988 is 8892001.

It is a super-3 number, since 3×10029883 = 3026972433327882816, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 3006 + ... + 3322.

It is an arithmetic number, because the mean of its divisors is an integer number (84588).

21002988 is an apocalyptic number.

It is an amenable number.

1002988 is an abundant number, since it is smaller than the sum of its proper divisors (1027124).

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

1002988 is a wasteful number, since it uses less digits than its factorization.

1002988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 1002988 is about 1001.4928856462. The cubic root of 1002988 is about 100.0995009627.

Adding to 1002988 its reverse (8892001), we get a palindrome (9894989).

The spelling of 1002988 in words is "one million, two thousand, nine hundred eighty-eight".

Divisors: 1 2 4 7 14 28 113 226 317 452 634 791 1268 1582 2219 3164 4438 8876 35821 71642 143284 250747 501494 1002988