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40854 = 2311619
BaseRepresentation
bin1001111110010110
32002001010
421332112
52301404
6513050
7230052
oct117626
962033
1040854
1128770
121b786
1315798
1410c62
15c189
hex9f96

40854 has 16 divisors (see below), whose sum is σ = 89280. Its totient is φ = 12360.

The previous prime is 40853. The next prime is 40867. The reversal of 40854 is 45804.

It is a self number, because there is not a number n which added to its sum of digits gives 40854.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 40854.

It is not an unprimeable number, because it can be changed into a prime (40853) 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, 244 + ... + 375.

It is an arithmetic number, because the mean of its divisors is an integer number (5580).

240854 is an apocalyptic number.

40854 is an abundant number, since it is smaller than the sum of its proper divisors (48426).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44640).

40854 is a wasteful number, since it uses less digits than its factorization.

40854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 40854 is about 202.1237244858. The cubic root of 40854 is about 34.4411936655.

Subtracting 40854 from its reverse (45804), we obtain a triangular number (4950 = T99).

The spelling of 40854 in words is "forty thousand, eight hundred fifty-four".

Divisors: 1 2 3 6 11 22 33 66 619 1238 1857 3714 6809 13618 20427 40854