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1992930 = 23566431
BaseRepresentation
bin111100110100011100010
310202020210020
413212203202
51002233210
6110414310
722640202
oct7464342
93666706
101992930
111141355
12801396
1354a164
1439c402
15295770
hex1e68e2

1992930 has 16 divisors (see below), whose sum is σ = 4783104. Its totient is φ = 531440.

The previous prime is 1992919. The next prime is 1992937. The reversal of 1992930 is 392991.

It is a junction number, because it is equal to n+sod(n) for n = 1992891 and 1992900.

It is not an unprimeable number, because it can be changed into a prime (1992937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33186 + ... + 33245.

It is an arithmetic number, because the mean of its divisors is an integer number (298944).

21992930 is an apocalyptic number.

1992930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1992930 is an abundant number, since it is smaller than the sum of its proper divisors (2790174).

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

1992930 is a wasteful number, since it uses less digits than its factorization.

1992930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66441.

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 1992930 is about 1411.7117269471. The cubic root of 1992930 is about 125.8434690119.

The spelling of 1992930 in words is "one million, nine hundred ninety-two thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 66431 132862 199293 332155 398586 664310 996465 1992930