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1908942 = 237243151
BaseRepresentation
bin111010010000011001110
310120222120120
413102003032
5442041232
6104525410
722140300
oct7220316
93528516
101908942
111094242
12780866
1351ab69
14379970
1527a92c
hex1d20ce

1908942 has 48 divisors (see below), whose sum is σ = 4574592. Its totient is φ = 529200.

The previous prime is 1908923. The next prime is 1908943. The reversal of 1908942 is 2498091.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1908943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12567 + ... + 12717.

It is an arithmetic number, because the mean of its divisors is an integer number (95304).

21908942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1908942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2287296).

1908942 is an abundant number, since it is smaller than the sum of its proper divisors (2665650).

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

1908942 is a wasteful number, since it uses less digits than its factorization.

1908942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1908942 is about 1381.6446721209. The cubic root of 1908942 is about 124.0502311233.

It can be divided in two parts, 1908 and 942, that added together give a triangular number (2850 = T75).

The spelling of 1908942 in words is "one million, nine hundred eight thousand, nine hundred forty-two".

Divisors: 1 2 3 6 7 14 21 42 43 49 86 98 129 147 151 258 294 301 302 453 602 903 906 1057 1806 2107 2114 3171 4214 6321 6342 6493 7399 12642 12986 14798 19479 22197 38958 44394 45451 90902 136353 272706 318157 636314 954471 1908942