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1225992 = 233232221
BaseRepresentation
bin100101011010100001000
32022021202010
410223110020
5303212432
642135520
713264215
oct4532410
92267663
101225992
11768119
124b15a0
1333c051
1423cb0c
151933cc
hex12b508

1225992 has 32 divisors (see below), whose sum is σ = 3199680. Its totient is φ = 390720.

The previous prime is 1225981. The next prime is 1225997. The reversal of 1225992 is 2995221.

It is not an unprimeable number, because it can be changed into a prime (1225997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559 + ... + 1662.

It is an arithmetic number, because the mean of its divisors is an integer number (99990).

21225992 is an apocalyptic number.

1225992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1225992 is an abundant number, since it is smaller than the sum of its proper divisors (1973688).

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

1225992 is a wasteful number, since it uses less digits than its factorization.

1225992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253 (or 2249 counting only the distinct ones).

The product of its digits is 3240, while the sum is 30.

The square root of 1225992 is about 1107.2452302900. The cubic root of 1225992 is about 107.0276226469.

The spelling of 1225992 in words is "one million, two hundred twenty-five thousand, nine hundred ninety-two".

Divisors: 1 2 3 4 6 8 12 23 24 46 69 92 138 184 276 552 2221 4442 6663 8884 13326 17768 26652 51083 53304 102166 153249 204332 306498 408664 612996 1225992