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1982028 = 223331499
BaseRepresentation
bin111100011111001001100
310201200211110
413203321030
51001411103
6110252020
722563336
oct7437114
93650743
101982028
111134144
127b7010
135451c9
14398456
15292403
hex1e3e4c

1982028 has 24 divisors (see below), whose sum is σ = 4648000. Its totient is φ = 657360.

The previous prime is 1982021. The next prime is 1982033. The reversal of 1982028 is 8202891.

It is a junction number, because it is equal to n+sod(n) for n = 1981986 and 1982004.

It is not an unprimeable number, because it can be changed into a prime (1982021) 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, 3723 + ... + 4221.

21982028 is an apocalyptic number.

It is an amenable number.

1982028 is an abundant number, since it is smaller than the sum of its proper divisors (2665972).

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

1982028 is a wasteful number, since it uses less digits than its factorization.

1982028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1982028 is about 1407.8451619408. The cubic root of 1982028 is about 125.6135805565.

The spelling of 1982028 in words is "one million, nine hundred eighty-two thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 331 499 662 993 998 1324 1497 1986 1996 2994 3972 5988 165169 330338 495507 660676 991014 1982028