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40644056 = 2337612251
BaseRepresentation
bin1001101100001…
…0110111011000
32211110221011102
42123002313120
540401102211
64011050532
71002316535
oct233026730
984427142
1040644056
1120a40532
1211740a48
138560a4b
14557dd8c
15387ca3b
hex26c2dd8

40644056 has 32 divisors (see below), whose sum is σ = 79585680. Its totient is φ = 19440000.

The previous prime is 40644047. The next prime is 40644061. The reversal of 40644056 is 65044604.

40644056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×406440562 = 3303878576262272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16931 + ... + 19181.

Almost surely, 240644056 is an apocalyptic number.

It is an amenable number.

40644056 is a deficient number, since it is larger than the sum of its proper divisors (38941624).

40644056 is a wasteful number, since it uses less digits than its factorization.

40644056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355 (or 2351 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 40644056 is about 6375.2690923599. The cubic root of 40644056 is about 343.8209587507.

The spelling of 40644056 in words is "forty million, six hundred forty-four thousand, fifty-six".

Divisors: 1 2 4 8 37 61 74 122 148 244 296 488 2251 2257 4502 4514 9004 9028 18008 18056 83287 137311 166574 274622 333148 549244 666296 1098488 5080507 10161014 20322028 40644056