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552807438 = 232331129221
BaseRepresentation
bin100000111100110…
…010110000001110
31102112012112020120
4200330302300032
52113004314223
6130504325410
716461533331
oct4074626016
91375175216
10552807438
11264055457
12135173866
138a6b42c1
14535c0618
15337e9be3
hex20f32c0e

552807438 has 32 divisors (see below), whose sum is σ = 1190909952. Its totient is φ = 170570400.

The previous prime is 552807427. The next prime is 552807439. The reversal of 552807438 is 834708255.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 552807438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552807439) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 60333 + ... + 68888.

It is an arithmetic number, because the mean of its divisors is an integer number (37215936).

Almost surely, 2552807438 is an apocalyptic number.

552807438 is an abundant number, since it is smaller than the sum of its proper divisors (638102514).

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

552807438 is a wasteful number, since it uses less digits than its factorization.

552807438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129280.

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 552807438 is about 23511.8573915376. The cubic root of 552807438 is about 820.7129621172.

The spelling of 552807438 in words is "five hundred fifty-two million, eight hundred seven thousand, four hundred thirty-eight".

Divisors: 1 2 3 6 23 31 46 62 69 93 138 186 713 1426 2139 4278 129221 258442 387663 775326 2972083 4005851 5944166 8011702 8916249 12017553 17832498 24035106 92134573 184269146 276403719 552807438