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1982928 = 243109379
BaseRepresentation
bin111100100000111010000
310201202001210
413210013100
51001423203
6110300120
722566063
oct7440720
93652053
101982928
111134892
127b7640
1354573c
143988da
15292803
hex1e41d0

1982928 has 40 divisors (see below), whose sum is σ = 5183200. Its totient is φ = 653184.

The previous prime is 1982921. The next prime is 1982951. The reversal of 1982928 is 8292891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5043 + ... + 5421.

It is an arithmetic number, because the mean of its divisors is an integer number (129580).

21982928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1982928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2591600).

1982928 is an abundant number, since it is smaller than the sum of its proper divisors (3200272).

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

1982928 is a wasteful number, since it uses less digits than its factorization.

1982928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 493 counting only the distinct ones).

The product of its digits is 20736, while the sum is 39.

The square root of 1982928 is about 1408.1647630870. The cubic root of 1982928 is about 125.6325905663.

The spelling of 1982928 in words is "one million, nine hundred eighty-two thousand, nine hundred twenty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 48 109 218 327 379 436 654 758 872 1137 1308 1516 1744 2274 2616 3032 4548 5232 6064 9096 18192 41311 82622 123933 165244 247866 330488 495732 660976 991464 1982928