1267903896 has 128 divisors (see below), whose sum is σ = 3945024000. Its totient is φ = 331333632.

The previous prime is 1267903859. The next prime is 1267903939. The reversal of 1267903896 is 6983097621.

It is a congruent number.

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, 85720 + ... + 99416.

It is an arithmetic number, because the mean of its divisors is an integer number (30820500).

Almost surely, 2^1267903896 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 1267903896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1972512000).

1267903896 is an abundant number, since it is smaller than the sum of its proper divisors (2677120104).

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

1267903896 is a wasteful number, since it uses less digits than its factorization.

1267903896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13761 (or 13757 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 1267903896 is about 35607.6381693591. The cubic root of 1267903896 is about 1082.3360204048.

The spelling of 1267903896 in words is "one billion, two hundred sixty-seven million, nine hundred three thousand, eight hundred ninety-six".