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40280066 = 2831671453
BaseRepresentation
bin1001100110101…
…0000000000010
32210210102212022
42121222000002
540302430231
63555201442
7666242411
oct231520002
983712768
1040280066
1120812012
12115a6282
138464178
1454c7478
153809c7b
hex266a002

40280066 has 16 divisors (see below), whose sum is σ = 61556544. Its totient is φ = 19764624.

The previous prime is 40280063. The next prime is 40280083. The reversal of 40280066 is 66008204.

It is not an unprimeable number, because it can be changed into a prime (40280063) 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, 26996 + ... + 28448.

It is an arithmetic number, because the mean of its divisors is an integer number (3847284).

Almost surely, 240280066 is an apocalyptic number.

40280066 is a deficient number, since it is larger than the sum of its proper divisors (21276478).

40280066 is a wasteful number, since it uses less digits than its factorization.

40280066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 40280066 is about 6346.6578606381. The cubic root of 40280066 is about 342.7915105686.

The spelling of 40280066 in words is "forty million, two hundred eighty thousand, sixty-six".

Divisors: 1 2 83 166 167 334 1453 2906 13861 27722 120599 241198 242651 485302 20140033 40280066