1256896788 has 48 divisors (see below), whose sum is σ = 3356943744. Its totient is φ = 358554240.

The previous prime is 1256896777. The next prime is 1256896789. The reversal of 1256896788 is 8876986521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256896789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44206 + ... + 66842.

It is an arithmetic number, because the mean of its divisors is an integer number (69936328).

Almost surely, 2^1256896788 is an apocalyptic number.

It is an amenable number.

1256896788 is an abundant number, since it is smaller than the sum of its proper divisors (2100046956).

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

1256896788 is a wasteful number, since it uses less digits than its factorization.

1256896788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23312 (or 23310 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 60.

The square root of 1256896788 is about 35452.7402043904. The cubic root of 1256896788 is about 1079.1948697535.

The spelling of 1256896788 in words is "one billion, two hundred fifty-six million, eight hundred ninety-six thousand, seven hundred eighty-eight".