1245828428 has 24 divisors (see below), whose sum is σ = 2349659760. Its totient is φ = 574568640.

The previous prime is 1245828383. The next prime is 1245828433. The reversal of 1245828428 is 8248285421.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 67658 + ... + 84078.

It is an arithmetic number, because the mean of its divisors is an integer number (97902490).

Almost surely, 2^1245828428 is an apocalyptic number.

It is an amenable number.

1245828428 is a deficient number, since it is larger than the sum of its proper divisors (1103831332).

1245828428 is a wasteful number, since it uses less digits than its factorization.

1245828428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17897 (or 17895 counting only the distinct ones).

The product of its digits is 327680, while the sum is 44.

The square root of 1245828428 is about 35296.2948197116. The cubic root of 1245828428 is about 1076.0176922507.

The spelling of 1245828428 in words is "one billion, two hundred forty-five million, eight hundred twenty-eight thousand, four hundred twenty-eight".