1230038440 has 16 divisors (see below), whose sum is σ = 2767586580. Its totient is φ = 492015360.

The previous prime is 1230038437. The next prime is 1230038479. The reversal of 1230038440 is 448300321.

It can be written as a sum of positive squares in 2 ways, for example, as 1169229636 + 60808804 = 34194^2 + 7798^2 .

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, 15375441 + ... + 15375520.

Almost surely, 2^1230038440 is an apocalyptic number.

1230038440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230038440 is an abundant number, since it is smaller than the sum of its proper divisors (1537548140).

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

1230038440 is a wasteful number, since it uses less digits than its factorization.

1230038440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30750972 (or 30750968 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1230038440 is about 35071.9038547952. The cubic root of 1230038440 is about 1071.4524311470.

Adding to 1230038440 its reverse (448300321), we get a palindrome (1678338761).

The spelling of 1230038440 in words is "one billion, two hundred thirty million, thirty-eight thousand, four hundred forty".