1268390604 has 96 divisors (see below), whose sum is σ = 3389674176. Its totient is φ = 365690880.

The previous prime is 1268390573. The next prime is 1268390611. The reversal of 1268390604 is 4060938621.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 680634 + ... + 682494.

It is an arithmetic number, because the mean of its divisors is an integer number (35309106).

Almost surely, 2^1268390604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1268390604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1694837088).

1268390604 is an abundant number, since it is smaller than the sum of its proper divisors (2121283572).

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

1268390604 is a wasteful number, since it uses less digits than its factorization.

1268390604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155 (or 2153 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 1268390604 is about 35614.4718337925. The cubic root of 1268390604 is about 1082.4744941516.

The spelling of 1268390604 in words is "one billion, two hundred sixty-eight million, three hundred ninety thousand, six hundred four".