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1225144 = 23374139
BaseRepresentation
bin100101011000110111000
32022020120201
410223012320
5303201034
642131544
713261564
oct4530670
92266521
101225144
11767518
124b0bb4
1333b84b
1423c6a4
15193014
hex12b1b8

1225144 has 16 divisors (see below), whose sum is σ = 2359800. Its totient is φ = 595872.

The previous prime is 1225129. The next prime is 1225153. The reversal of 1225144 is 4415221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1774 + ... + 2365.

21225144 is an apocalyptic number.

1225144 is the 592-nd nonagonal number.

It is an amenable number.

1225144 is a deficient number, since it is larger than the sum of its proper divisors (1134656).

1225144 is a wasteful number, since it uses less digits than its factorization.

1225144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4182 (or 4178 counting only the distinct ones).

The product of its digits is 320, while the sum is 19.

The square root of 1225144 is about 1106.8622317163. The cubic root of 1225144 is about 107.0029404962.

It can be divided in two parts, 1225 and 144, that multiplied together give a square (176400 = 4202).

The spelling of 1225144 in words is "one million, two hundred twenty-five thousand, one hundred forty-four".