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415125220 = 22520756261
BaseRepresentation
bin11000101111100…
…100111011100100
31001221010112202011
4120233210323210
51322233001340
6105105324004
713200335416
oct3057447344
91057115664
10415125220
111a33667a4
12b7036604
1368008c33
143d1c09b6
15266a00ea
hex18be4ee4

415125220 has 12 divisors (see below), whose sum is σ = 871763004. Its totient is φ = 166050080.

The previous prime is 415125209. The next prime is 415125223. The reversal of 415125220 is 22521514.

It can be written as a sum of positive squares in 2 ways, for example, as 206669376 + 208455844 = 14376^2 + 14438^2 .

It is a junction number, because it is equal to n+sod(n) for n = 415125191 and 415125200.

It is not an unprimeable number, because it can be changed into a prime (415125223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10378111 + ... + 10378150.

It is an arithmetic number, because the mean of its divisors is an integer number (72646917).

Almost surely, 2415125220 is an apocalyptic number.

It is an amenable number.

415125220 is an abundant number, since it is smaller than the sum of its proper divisors (456637784).

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

415125220 is a wasteful number, since it uses less digits than its factorization.

415125220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20756270 (or 20756268 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 415125220 is about 20374.6219596831. The cubic root of 415125220 is about 745.9786067701.

Adding to 415125220 its reverse (22521514), we get a palindrome (437646734).

The spelling of 415125220 in words is "four hundred fifteen million, one hundred twenty-five thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 20756261 41512522 83025044 103781305 207562610 415125220