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40661312 = 26635333
BaseRepresentation
bin1001101100011…
…1000101000000
32211111210211112
42123013011000
540402130222
64011302452
71002421046
oct233070500
984453745
1040661312
1120a5249a
121174aa28
138568863
145586396
153882be2
hex26c7140

40661312 has 14 divisors (see below), whose sum is σ = 80687418. Its totient is φ = 20330624.

The previous prime is 40661293. The next prime is 40661317. The reversal of 40661312 is 21316604.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22886656 + 17774656 = 4784^2 + 4216^2 .

It is a super-2 number, since 2×406613122 = 3306684587122688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40661317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317603 + ... + 317730.

It is an arithmetic number, because the mean of its divisors is an integer number (5763387).

Almost surely, 240661312 is an apocalyptic number.

It is an amenable number.

40661312 is a deficient number, since it is larger than the sum of its proper divisors (40026106).

40661312 is an equidigital number, since it uses as much as digits as its factorization.

40661312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635345 (or 635335 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 40661312 is about 6376.6223033829. The cubic root of 40661312 is about 343.8696098583.

Adding to 40661312 its reverse (21316604), we get a palindrome (61977916).

The spelling of 40661312 in words is "forty million, six hundred sixty-one thousand, three hundred twelve".

Divisors: 1 2 4 8 16 32 64 635333 1270666 2541332 5082664 10165328 20330656 40661312