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520372 = 221941167
BaseRepresentation
bin1111111000010110100
3222102211001
41333002310
5113122442
615053044
74265056
oct1770264
9872731
10520372
11325a66
12211184
13152b18
14d78d6
15a42b7
hex7f0b4

520372 has 24 divisors (see below), whose sum is σ = 987840. Its totient is φ = 239040.

The previous prime is 520369. The next prime is 520379. The reversal of 520372 is 273025.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3033 + ... + 3199.

It is an arithmetic number, because the mean of its divisors is an integer number (41160).

2520372 is an apocalyptic number.

It is an amenable number.

520372 is a deficient number, since it is larger than the sum of its proper divisors (467468).

520372 is a wasteful number, since it uses less digits than its factorization.

520372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 520372 is about 721.3681445697. The cubic root of 520372 is about 80.4336863699.

Adding to 520372 its reverse (273025), we get a palindrome (793397).

The spelling of 520372 in words is "five hundred twenty thousand, three hundred seventy-two".

Divisors: 1 2 4 19 38 41 76 82 164 167 334 668 779 1558 3116 3173 6346 6847 12692 13694 27388 130093 260186 520372