1268296390 has 32 divisors (see below), whose sum is σ = 2441189664. Its totient is φ = 472742400.

The previous prime is 1268296349. The next prime is 1268296453. The reversal of 1268296390 is 936928621.

It is a self number, because there is not a number n which added to its sum of digits gives 1268296390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19764 + ... + 54103.

It is an arithmetic number, because the mean of its divisors is an integer number (76287177).

Almost surely, 2^1268296390 is an apocalyptic number.

1268296390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1268296390 is a deficient number, since it is larger than the sum of its proper divisors (1172893274).

1268296390 is a wasteful number, since it uses less digits than its factorization.

1268296390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73992.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 1268296390 is about 35613.1491165833. The cubic root of 1268296390 is about 1082.4476920039.

The spelling of 1268296390 in words is "one billion, two hundred sixty-eight million, two hundred ninety-six thousand, three hundred ninety".