Search a number
-
+
12925420 = 225646271
BaseRepresentation
bin110001010011…
…100111101100
3220022200100021
4301103213230
511302103140
61141011524
7214602304
oct61234754
926280307
1012925420
117329072
1243b3ba4
1328a72a1
141a06604
151204b4a
hexc539ec

12925420 has 12 divisors (see below), whose sum is σ = 27143424. Its totient is φ = 5170160.

The previous prime is 12925369. The next prime is 12925421. The reversal of 12925420 is 2452921.

It is not an unprimeable number, because it can be changed into a prime (12925421) 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 3 ways as a sum of consecutive naturals, for example, 323116 + ... + 323155.

It is an arithmetic number, because the mean of its divisors is an integer number (2261952).

Almost surely, 212925420 is an apocalyptic number.

12925420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12925420 is an abundant number, since it is smaller than the sum of its proper divisors (14218004).

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

12925420 is a wasteful number, since it uses less digits than its factorization.

12925420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646280 (or 646278 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 12925420 is about 3595.1940142362. The cubic root of 12925420 is about 234.6829586155.

The spelling of 12925420 in words is "twelve million, nine hundred twenty-five thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 646271 1292542 2585084 3231355 6462710 12925420