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1232160940 = 22561608047
BaseRepresentation
bin100100101110001…
…0100100010101100
310011212112021001101
41021130110202230
510010413122230
6322133252444
742351123643
oct11134244254
93155467041
101232160940
1158258282a
122a4794124
13168374c1a
14b990235a
157328eaca
hex497148ac

1232160940 has 12 divisors (see below), whose sum is σ = 2587538016. Its totient is φ = 492864368.

The previous prime is 1232160929. The next prime is 1232160953. The reversal of 1232160940 is 490612321.

It is a junction number, because it is equal to n+sod(n) for n = 1232160899 and 1232160908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30804004 + ... + 30804043.

It is an arithmetic number, because the mean of its divisors is an integer number (215628168).

Almost surely, 21232160940 is an apocalyptic number.

1232160940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232160940 is an abundant number, since it is smaller than the sum of its proper divisors (1355377076).

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

1232160940 is a wasteful number, since it uses less digits than its factorization.

1232160940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61608056 (or 61608054 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1232160940 is about 35102.1500765979. The cubic root of 1232160940 is about 1072.0683606718.

The spelling of 1232160940 in words is "one billion, two hundred thirty-two million, one hundred sixty thousand, nine hundred forty".

Divisors: 1 2 4 5 10 20 61608047 123216094 246432188 308040235 616080470 1232160940