1230639452 has 36 divisors (see below), whose sum is σ = 2614593744. Its totient is φ = 496389120.

The previous prime is 1230639439. The next prime is 1230639463. The reversal of 1230639452 is 2549360321.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 67949 + ... + 84132.

It is an arithmetic number, because the mean of its divisors is an integer number (72627604).

Almost surely, 2^1230639452 is an apocalyptic number.

It is an amenable number.

1230639452 is an abundant number, since it is smaller than the sum of its proper divisors (1383954292).

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

1230639452 is a wasteful number, since it uses less digits than its factorization.

1230639452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152126 (or 152107 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 1230639452 is about 35080.4710914777. The cubic root of 1230639452 is about 1071.6269110371.

Adding to 1230639452 its reverse (2549360321), we get a palindrome (3779999773).

The spelling of 1230639452 in words is "one billion, two hundred thirty million, six hundred thirty-nine thousand, four hundred fifty-two".