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7920325 = 52745259
BaseRepresentation
bin11110001101101011000101
3112220101122101
4132031223011
54011422300
6441432101
7124215220
oct36155305
915811571
107920325
11451a726
12279b631
1318440aa
1410a25b7
15a66b6a
hex78dac5

7920325 has 12 divisors (see below), whose sum is σ = 11224480. Its totient is φ = 5430960.

The previous prime is 7920323. The next prime is 7920329. The reversal of 7920325 is 5230297.

It is not a de Polignac number, because 7920325 - 21 = 7920323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7920293 and 7920302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7920323) 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 11 ways as a sum of consecutive naturals, for example, 22455 + ... + 22804.

Almost surely, 27920325 is an apocalyptic number.

It is an amenable number.

7920325 is a deficient number, since it is larger than the sum of its proper divisors (3304155).

7920325 is a wasteful number, since it uses less digits than its factorization.

7920325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45276 (or 45271 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 7920325 is about 2814.3071971624. The cubic root of 7920325 is about 199.3338251859. Note that the first 3 decimals are identical.

Subtracting from 7920325 its sum of digits (28), we obtain a palindrome (7920297).

The spelling of 7920325 in words is "seven million, nine hundred twenty thousand, three hundred twenty-five".

Divisors: 1 5 7 25 35 175 45259 226295 316813 1131475 1584065 7920325