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445632741 = 3249514749
BaseRepresentation
bin11010100011111…
…101000011100101
31011001112111012100
4122203331003211
51403040221431
6112115242313
714020546551
oct3243750345
91131474170
10445632741
11209603524
121052a9399
137142ac18
1443282861
15291c94e6
hex1a8fd0e5

445632741 has 6 divisors (see below), whose sum is σ = 643691750. Its totient is φ = 297088488.

The previous prime is 445632739. The next prime is 445632757. The reversal of 445632741 is 147236544.

It can be written as a sum of positive squares in only one way, i.e., 307476225 + 138156516 = 17535^2 + 11754^2 .

It is not a de Polignac number, because 445632741 - 21 = 445632739 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 445632696 and 445632705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445632791) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24757366 + ... + 24757383.

Almost surely, 2445632741 is an apocalyptic number.

It is an amenable number.

445632741 is a deficient number, since it is larger than the sum of its proper divisors (198059009).

445632741 is a wasteful number, since it uses less digits than its factorization.

445632741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49514755 (or 49514752 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 445632741 is about 21110.0151823726. The cubic root of 445632741 is about 763.8223531163.

The spelling of 445632741 in words is "four hundred forty-five million, six hundred thirty-two thousand, seven hundred forty-one".

Divisors: 1 3 9 49514749 148544247 445632741