1232305856 has 14 divisors (see below), whose sum is σ = 2445357060. Its totient is φ = 616152896.

The previous prime is 1232305853. The next prime is 1232305861. The reversal of 1232305856 is 6585032321.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1232305853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9627326 + ... + 9627453.

Almost surely, 2^1232305856 is an apocalyptic number.

1232305856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1232305856 is a deficient number, since it is larger than the sum of its proper divisors (1213051204).

1232305856 is an equidigital number, since it uses as much as digits as its factorization.

1232305856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19254791 (or 19254781 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1232305856 is about 35104.2142199480. The cubic root of 1232305856 is about 1072.1103881276.

The spelling of 1232305856 in words is "one billion, two hundred thirty-two million, three hundred five thousand, eight hundred fifty-six".