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520023233 = 31131128053
BaseRepresentation
bin11110111111101…
…110110011000001
31100020111220202202
4132333232303001
52031111220413
6123333522545
715613060502
oct3677566301
91306456682
10520023233
112475a3174
121261a3455
1383975c72
144d0c8ba9
15309c0e58
hex1efeecc1

520023233 has 8 divisors (see below), whose sum is σ = 540900096. Its totient is φ = 499402800.

The previous prime is 520023211. The next prime is 520023263. The reversal of 520023233 is 332320025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520023233 - 226 = 452914369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520023263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59966 + ... + 68087.

It is an arithmetic number, because the mean of its divisors is an integer number (67612512).

Almost surely, 2520023233 is an apocalyptic number.

It is an amenable number.

520023233 is a deficient number, since it is larger than the sum of its proper divisors (20876863).

520023233 is a wasteful number, since it uses less digits than its factorization.

520023233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128215.

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 520023233 is about 22804.0179135169. The cubic root of 520023233 is about 804.1571276320.

Adding to 520023233 its reverse (332320025), we get a palindrome (852343258).

The spelling of 520023233 in words is "five hundred twenty million, twenty-three thousand, two hundred thirty-three".

Divisors: 1 31 131 4061 128053 3969643 16774943 520023233