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1225340 = 225197311
BaseRepresentation
bin100101011001001111100
32022020211222
410223021330
5303202330
642132512
713262264
oct4531174
92266758
101225340
11767686
124b1138
1333b96c
1423c7a4
151930e5
hex12b27c

1225340 has 24 divisors (see below), whose sum is σ = 2594592. Its totient is φ = 486080.

The previous prime is 1225331. The next prime is 1225361. The reversal of 1225340 is 435221.

It is a congruent number.

It is an unprimeable number.

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, 3785 + ... + 4095.

It is an arithmetic number, because the mean of its divisors is an integer number (108108).

21225340 is an apocalyptic number.

1225340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225340 is an abundant number, since it is smaller than the sum of its proper divisors (1369252).

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

1225340 is a wasteful number, since it uses less digits than its factorization.

1225340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1225340 is about 1106.9507667462. The cubic root of 1225340 is about 107.0086463447.

It can be divided in two parts, 12 and 25340, that added together give a palindrome (25352).

The spelling of 1225340 in words is "one million, two hundred twenty-five thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 197 311 394 622 788 985 1244 1555 1970 3110 3940 6220 61267 122534 245068 306335 612670 1225340