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1224804 = 223722083
BaseRepresentation
bin100101011000001100100
32022020010010
410223001210
5303143204
642130220
713260600
oct4530144
92266103
101224804
11767239
124b0970
1333b649
1423c500
15192d89
hex12b064

1224804 has 36 divisors (see below), whose sum is σ = 3326064. Its totient is φ = 349776.

The previous prime is 1224767. The next prime is 1224809. The reversal of 1224804 is 4084221.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1224809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 454 + ... + 1629.

21224804 is an apocalyptic number.

1224804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1224804 is an abundant number, since it is smaller than the sum of its proper divisors (2101260).

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

1224804 is a wasteful number, since it uses less digits than its factorization.

1224804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104 (or 2095 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1224804 is about 1106.7086337424. The cubic root of 1224804 is about 106.9930411522.

The spelling of 1224804 in words is "one million, two hundred twenty-four thousand, eight hundred four".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 49 84 98 147 196 294 588 2083 4166 6249 8332 12498 14581 24996 29162 43743 58324 87486 102067 174972 204134 306201 408268 612402 1224804