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1222864 = 24233323
BaseRepresentation
bin100101010100011010000
32022010110021
410222203100
5303112424
642113224
713252126
oct4524320
92263407
101222864
11765835
124ab814
1333a7b6
1423b916
151924e4
hex12a8d0

1222864 has 20 divisors (see below), whose sum is σ = 2473056. Its totient is φ = 584672.

The previous prime is 1222853. The next prime is 1222889. The reversal of 1222864 is 4682221.

It is a happy number.

It is an Ulam number.

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, 1294 + ... + 2029.

21222864 is an apocalyptic number.

It is an amenable number.

1222864 is an abundant number, since it is smaller than the sum of its proper divisors (1250192).

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

1222864 is a wasteful number, since it uses less digits than its factorization.

1222864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354 (or 3348 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 1222864 is about 1105.8318136136. The cubic root of 1222864 is about 106.9365215822.

The spelling of 1222864 in words is "one million, two hundred twenty-two thousand, eight hundred sixty-four".